Apollo 1

Infobox Space mission
mission_name = "Apollo 1"
insignia = Apollo_1_patch.pngcrew_size = 3
command_module = CM-012 mass 20,412 kg
service_module = SM-012
booster = "Saturn IB SA-204"
launch_pad = "LC 34 nowrap|Cape Canaveral Florida, USA"
launch = "February 21 1967"
apogee="~300 km" |perigee="~230 km"
period="~89.7 m" |inclination="~31°"
landing = "March 7 1967 Atlantic Ocean, north of Puerto Rico" smallsup|a
duration = "14 days"
orbits = "~200"
crew_photo = Apollo1-Crew 01.jpg
crew_caption = Left to right: Grissom, White, Chaffee
previous =
next =
footnotes = "Italics" indicate parameters for the planned mission canceled following the Jan 27 fire. a The intended recovery carrier was the USS "Essex".

Apollo 1 is the official name that was retroactively given to the never-flown Apollo/Saturn 204 (AS-204) mission. Its command module (CM-012) was destroyed by fire during a test and training exercise on January 27 1967 at Pad 34 (Launch Complex 34, Cape Canaveral, then known as Cape Kennedy) atop a Saturn IB rocket. The crew aboard were the astronauts selected for the first manned Apollo program mission: Command Pilot Virgil I. "Gus" Grissom, Senior Pilot Ed White and Pilot Roger B. Chaffee. All three died in the fire.

Although the ignition source of the fire was never conclusively identified, the astronauts' deaths were attributed to a wide range of lethal design hazards in the early Apollo command module. Among these were the use of a high-pressure 100 percent-oxygen atmosphere for the test, wiring and plumbing flaws, inflammable materials in the cockpit, an inward-opening hatch that would not open in this kind of an emergency and the flight suits worn by the astronauts.

Crew

*Virgil I. "Gus" Grissom, Command Pilot
*Edward H. White II, Senior Pilot
*Roger B. Chaffee, Pilot

Backup crews

*April - December 1966
**James McDivitt, Command Pilot
**David Scott, Senior Pilot
**Rusty Schweickart, PilotThis crew flew on "Apollo 9".

*December 1966 - January 1967
**Walter Schirra, Command Pilot
**Donn Eisele, Senior Pilot
**Walter Cunningham, PilotThis crew flew on "Apollo 7".

Mission background

AS-204 was to be the first manned flight of a command and service module (CSM) to Earth orbit, launched on a Saturn 1B. CM-012, the Apollo 1 command module, was a Block I design built for spaceflight but never intended for a trip to the moon since it lacked the needed docking equipment.

Apollo 1 was meant to be followed by two more Apollo flights in the summer and late autumn of 1967. The first of these would have launched a Block II Apollo CSM on a Saturn 1B along with an unmanned LM on a second Saturn 1B, both ascending to low earth orbit for a CSM-LM rendezvous and docking. The second flight would have launched the CSM and LM together on a Saturn V to high earth orbit. Both of these missions were canceled following the Apollo 1 fire, but their mission objectives were later carried out in somewhat different ways by Apollo 7, Apollo 8 and Apollo 9).

The AS-204 mission was scheduled for the first quarter of 1967, having already missed a target date for the last quarter of 1966. The flight was to test "launch operations, ground tracking and control facilities and the performance of the Apollo-Saturn launch assembly" and would have lasted up to two weeks, depending on how the spacecraft performed. [Benson 1978: [http://www.hq.nasa.gov/office/pao/History/SP-4204/ch18-1.html Chapter 18-1 - The Fire That Seared The Spaceport, "Introduction"] ] Grissom resolved to keep AS-204 in orbit for a full 14 days if there was any way to do so.

Command module design worries

The Apollo command module was much bigger and far more complex than any previously implemented spacecraft design. The CM was built by North American Aviation, which had originally suggested the hatch open outward and carry explosive bolts in case of emergency. NASA didn't agree, arguing the hatch could be accidentally opened (what led to Grissom's "Liberty Bell 7" spacecraft sinking during splashdown recovery operations). Before the fire, astronauts successfully lobbied for an outward-opening hatch on future command modules, but NASA subsequently claimed the astronauts were thinking about ease of exit and entry for spacewalks (along with getting out of the CM after splashdown) rather than safety.Benson 1978: [http://www.hq.nasa.gov/office/pao/History/SP-4204/ch18-2.html Chapter 18-2 - The Fire That Seared The Spaceport, "Predictions of Trouble"] ]

North American Aviation also suggested the cabin atmosphere be an oxygen/nitrogen mixture as on the earth's surface. NASA objected, citing heightened risks such as catastrophic decompression sickness and mismanagement of nitrogen levels, which could cause the astronauts to pass out and die. NASA officials asserted a pure oxygen atmosphere had been used without incident in the Mercury and Gemini programs so it would be safe for use on Apollo. Also, a pure oxygen design saved weight.

CM-012 was delivered to NASA with dozens of acknowledged but unresolved flaws. The crew expressed serious concerns about fire hazards and other problems (Grissom even famously took a lemon from a tree by his house, telling his wife Betty, "I'm going to hang it on that spacecraft"). [cite web |url=http://history.nasa.gov/Apollo204/zorn/grissom.htm |work=Detailed Biographies of Apollo I Crew |title=Gus Grissom |publisher=NASA History |accessdate=2008-07-29 |first=White |last=Mary C.] The January 27, 1967 launch simulation, officially considered not hazardous, was a "plugs-out" test to determine whether the Apollo spacecraft would operate nominally on internal power while detached from all cables and umbilicals. There was hope that if the spacecraft passed this and subsequent tests it would be ready to fly on February 21, 1967. [cite web |work=NASA Special Publication-4029 |url=http://history.nasa.gov/SP-4029/Apollo_01a_Summary.htm |title=Apollo 1: The Fire 27 January 1967]

Tragedy

Plugs-out test

At 1:00 PM (1800 GMT) on January 27th Grissom, White and Chaffee entered the command module fully suited, were strapped into their seats and hooked up to the spacecraft's systems in preparation for the plugs-out test. There were immediate problems. A sour "buttermilk" smell in the air circulating through Grissom's suit delayed the launch simulation until 2:42 PM. Three minutes later the hatch was sealed and high-pressure pure oxygen began replacing the air in the cabin.

Further problems included episodes of high oxygen flow apparently linked to movements by the astronauts in their flightsuits. There were also faulty communications between the crew, the control room, the operations and checkout building and the complex 34 blockhouse. "How are we going to get to the moon if we can't talk between three buildings?" Grissom complained in frustration over the communication loop. This put the launch simulation on hold again at 5:40. Most countdown functions had been successfully completed by 6:20 but the countdown was still holding at T minus 10 minutes at 6:30 with all cables and umbilicals still attached to the command module while attempts were made to fix the communication problem.

Fire

The crew members were reclining in their horizontal couches, running through a checklist when a voltage transient was recorded at 6:30:54 (23:30:54 GMT). Ten seconds later (at 6:31:04) Chaffee said, "Hey..." Scuffling sounds followed for three seconds before Grissom shouted "Fire!" Chaffee then reported, "We've got a fire in the cockpit," and White said "Fire in the cockpit!"

After nearly ten seconds of frenetic movement noises Chaffee yelled, "We've got a bad fire! Let's get out! We're burning up! We're on fire! Get us out of here!" [cite web |publisher=NASA History |url=http://history.nasa.gov/SP-4029/Apollo_01c_Timeline.htm |title=Apollo 1 Fire Timeline |work=NASA Special Publication-4029] cite news |work=Palm Beach Post |url=http://www.palmbeachpost.com/state/content/state/epaper/2007/01/27/0127apollo.html |title=Apollo 1 astronauts honored at Cape |date=2007-01-27 |accessdate=2007-11-14] Some witnesses said they saw Ed White on the television monitors, reaching for the hatch release handle as flames in the cabin spread from left to right and licked the window. Only 17 seconds after the first indication by crew of any fire, the transmission ended abruptly at 6:31:21 with a scream of pain as the cabin ruptured after rapidly expanding gases from the fire overpressurized the CM to 29 psi.cite book |title=Report of Apollo 204 Review Board |chapter=Memorandum |url=http://www.hq.nasa.gov/pao/History/Apollo204/seamans.html |publisher=NASA History Office |date=1967-04-05 |first=Robert C., Jr. |last=Seamans]

Toxic smoke from the leaking command module, along with malfunctioning gas masks, slowed down the ground crew trying to rescue them. There were fears the whole launch complex might become engulfed by flames. It took five minutes to open the hatch, a layered array of three hatches with many ratchets. By this time the fire in the command module had gone out. Although the cabin lights had remained lit the ground crew was at first unable to find the astronauts. As the smoke cleared they found the bodies but were not able to remove them. The fire had melted the astronauts' nylon space suits along with some of the air lines connecting them to the cabin's life-support systems. Grissom's body was found lying mostly on the deck. His and White's suits were fused together. The body of Ed White (who mission protocol had tasked with opening the hatch) was lying back in his center couch. White would not have been able to open the inward-opening hatch because internal pressure had risen too high. Chaffee's job was to shut down the spacecraft systems and maintain communications with ground control. His body was still strapped into the right-hand seat.

Aftermath

According to the Apollo 204 Review Board, Grissom suffered severe third degree burns on over a third of his body and his spacesuit was mostly destroyed. White suffered third degree burns on almost half of his body and a quarter of his spacesuit had melted away. Chaffee suffered third degree burns over almost a quarter of his body and a small portion of his spacesuit was damaged. It was later confirmed the crew had died of smoke inhalation with burns contributing. It is unknown how badly the astronauts were burned before they lost consciousness.cite book |first=Robert C., Jr. |last=Seamans |publisher=NASA History Office |title=Report of Apollo 204 Review Board |chapter=Findings, Determinations And Recommendations |url=http://www.hq.nasa.gov/pao/History/Apollo204/find.html |date=1967-04-05 |accessdate=2007-10-07]

To their dismay, the review board found the documentation for CM-012 so lacking that they were at times unable to determine what had been installed in the spacecraft or what was in it at the time of the accident.

Cause

Since the CM was designed to endure outward pressure in the vacuum of space, the plugs-out test had been run with the cabin pressure at over 16 psi, almost 2 psi above the ambient sea level pressure at Launch Complex 34 and near the upper limits of measuring devices in the spacecraft. This represented over 5 times the oxygen density carried within the Mercury and Gemini capsules while in spaceflight (which was only 3 psi but equal to the partial pressure of oxygen at sea level and thus very breathable). Following a worldwide survey of artificial oxygen-rich environments, it was found that rarely if ever had a 100% oxygen environment been created and maintained at such a high pressure, in which a bar of aluminum can burn like wood. The investigation also found much substandard wiring and plumbing in the craft along with a misplaced socket wrench (which was ruled out as a cause). Hence, the fire was at first believed to have been caused by a spark somewhere in the over 25 km (15 miles) of wiring threaded throughout the command module.

The review board noted a silver-plated copper wire running through an environmental control unit near the command module pilot's couch which had become stripped of its Teflon insulation and abraded by repeated opening and closing of a small access door. This weak point in the wiring also ran near a junction in an ethylene glycol/water cooling line which was known to be prone to leaks. The electrolysis of ethylene glycol solution with the silver anode was a notable hazard which could cause a violent exothermic reaction, igniting the ethylene glycol mixture in the CM's corrosive test atmosphere of pure, high-pressure oxygen. [cite web |title=NASA history SP-4009 |url=http://www.hq.nasa.gov/office/pao/History/SP-4009/v4p2b.htm] [In 1967 a vice president of North American Aviation, John McCarthy, speculated that Grissom had accidentally "scuffed the insulation of a wire" whilst moving about the spacecraft but his remarks were ignored by the review board and strongly rejected by a congressional committee. Frank Borman, who had been the first astronaut to go inside the burned spacecraft, testified, "We found no evidence to support the thesis that Gus, or any of the crew members kicked the wire that ignited the flammables." A 1978 history of the accident written internally by NASA said at the time, "the spark that led to the fire still has wide currency at Kennedy Space Center. Men differ, however, on the cause of the scuff." (Benson 1978: [http://www.hq.nasa.gov/office/pao/History/SP-4204/ch18-6.html Chapter 18-6 - The Fire That Seared The Spaceport, "The Review Board"] , retrieved 12 May 2008) Soon after making his comment McCarthy had said, "I only brought it up as a hypothesis." (cite news |url=http://www.time.com/time/magazine/article/0,9171,843575-2,00.html |work=Time Magazine |title=Blind Spot |date=1967-04-21 |accessdate=2008-05-21)]

The panel cited how the NASA crew systems department had installed convert|34|sqft|m2 of fuzzy Velcro throughout the spacecraft, almost like carpeting. This velcro was found to be explosive in a high-pressure 100% oxygen environment. Up to 70 pounds of other non-metallic flammable materials had crept into the design.

In 1968 a team of MIT physicists went to Cape Kennedy and performed a static discharge test in the Apollo-8 spacecraft while it was being prepared for launch. With an electroscope, they measured the approximate energy of static discharges caused by a test crew dressed in nylon flight pressure suits and reclining on the nylon flight seats. The MIT investigators found sufficient energy for ignition discharged repeatedly when crewmembers shifted in their seats and then touched the spacecraft's aluminum panels.

The ignition source for the fire was never determined.

Command module redesign

After the fire the Apollo project was grounded. In hindsight the command module was understood to be extremely hazardous and in some instances, carelessly assembled. Many design changes were made, among them:

* At launch the cabin atmosphere would be at sea-level pressure and consist of 60% oxygen and 40% nitrogen, lowering to 5 psi during ascent and gradually changing over to 100% oxygen at about 2 psi during the first 24 hours of the trans-lunar coast.
* The hatch would open outward (which had already been planned) and be openable in less than ten seconds.
* Flammable materials in the cabin were replaced with self-extinguishing versions.
* Plumbing and wiring were covered with protective insulation.
* 1,407 wiring problems were corrected.
* Nylon suits (seen in the crew portrait above) were replaced with suits made of early Beta cloth, a non-flammable, highly melt-resistant fabric woven from silica and coated with glass.
* An explosive hatch was re-added (which had been removed after Mercury 4 when the hatch blew prematurely on Grissom's capsule and caused it to sink, irking NASA officials).

Much more thorough protocols were implemented for documenting spacecraft construction and maintenance. By all accounts the design changes were successful and worth the subsequent delay of almost 21 months before the project's successful first launch and completion of a manned mission, Apollo 7. Three years later when Apollo 13 executed an emergency shutdown of the command module after a crippling and life-threatening explosion in the service module while crossing trans-lunar space, water condensation gathered for four days but did not cause any short-outs or fatal sparks when the spacecraft was powered up again minutes before reentry. Moreover, documentation on the Apollo 13 spacecraft was so complete, investigators were able to reconstruct the cause of the explosion from telemetry, construction, maintenance and photographic records without ever examining the service module itself.

1961 Soviet oxygen fire

In March 1961, Soviet cosmonaut Valentin Bondarenko was killed when a fire started in the pure-oxygen atmosphere of an isolation chamber but the USSR concealed this tragedy for over 20 years, which subsequently caused some speculation as to whether or not the "Apollo 1" disaster might have been averted had NASA been aware of the incident. [cite news |last=Charles |first=John |url=http://www.thespacereview.com/article/797/1 |title=Could the CIA have prevented the Apollo 1 fire? |work=The Space Review |date=2007-01-29 |accessdate=2008-01-05] However, the design hazards of a 100% oxygen environment had been well described by 1967 and many deaths from flash fires in pure oxygen at or near sea-level pressure had been publicly reported during the 1950s and 60s. A 1966 editorial in the journal "Space/Aeronautics" asserted "The odds are that the first spaceflight casualty due to environmental exposure will occur not in space, but on the ground", and further noted that safety protocols for the Apollo project were thoroughly lacking.

Mission insignia

The "Apollo 1" insignia (see this article's infobox for an image of it) has a center showing a command service module flying over the southeastern United States with Florida (the launch point) prominent. The moon is seen in the distance, symbolic of the eventual program goal. A yellow border carries the mission and astronaut names with another border set with stars and stripes, trimmed in gold.

Memorials

Gus Grissom and Roger Chaffee were buried at Arlington National Cemetery. Ed White was buried at the cemetery of the United States Military Academy in West Point, New York. Their names are also enshrined on the Space Mirror Memorial at the Kennedy Space Center Visitor Complex in Merritt Island, Florida.

An Apollo 1 mission patch was left on the moon's surface during the first manned lunar landing by Apollo 11.

Launch Complex 34

Launch Complex 34 was subsequently used only for the launch of Apollo 7 and later dismantled but the launch platform remains at the site (coord|28.52182|N|80.561258|W|type:landmark_region:US_scale:10000) along with a few other concrete and steel-reinforced structures. The launch platform bears two plaques noting the tragedy.

One reads: "LAUNCH COMPLEX 34, Friday, 27 January 1967, 1831 Hours. Dedicated to the living memory of the crew of the Apollo 1: USAF. Lt. Colonel Virgil I. Grissom, USAF. Lt. Colonel Edward H. White, II, U.S.N. Lt. Commander Roger B. Chaffee. They gave their lives in service to their country in the ongoing exploration of humankind's final frontier. Remember them not for how they died but for those ideals for which they lived."

The other reads: "In memory of those who made the ultimate sacrifice so others could reach for the stars; Ad astra per aspera (a rough road leads to the stars); God speed to the crew of Apollo 1"

In January 2005 three granite benches built by a college classmate of one of the astronauts, one for each member of the crew, were installed at the site.

Each year the families of the Apollo 1 crew are invited to the site for a memorial, and the Kennedy Space Center Visitor Center offers a visit to the site for those who choose to take a special tour to the older launch sites on Cape Canaveral.

tars, landmarks on the Moon and Mars

* Three stars, Navi, Dnoces and Regor, were named in honor of the crew (the names are "Ivan", "Second" and "Roger" spelled backwards - "Ivan" was Grissom's middle name and Second was Edward H. White II). The crew used these stars to calibrate their equipment and as a practical joke, recorded the names in official NASA documentation. They eventually stuck as a posthumous honor. [cite web
url=http://www.hq.nasa.gov/alsj/a15/a15.postland.html
title=Post-landing Activities
work=Apollo 15 Lunar Surface Journal
date=2006-01-15
accessdate=2007-07-26
Section 105:11:33.
]

*Craters on the Moon and hills on Mars are named after the three astronauts.

Naming of Apollo 1

When North American Aviation shipped spacecraft CM-012 to Kennedy Space Center it bore a banner proclaiming it as "Apollo One". Grissom's crew had received approval for an "Apollo 1" patch in June 1966 but NASA was planning to call the mission "AS-204." After the fire, the astronauts' widows asked that "Apollo 1" be reserved for the flight their husbands never made.

Apollo 1's (AS-204) Saturn IB rocket was taken down from Launch Complex 34, later reassembled at Launch Complex 37B and used to launch the "Apollo 5" LM-1 into earth orbit for the first Lunar Module test mission.

Effect on early Apollo mission names

For a time mission planners called the next scheduled launch "Apollo 2". There were also suggestions the first Apollo CSM flights be named wholly out of chronological sequence as "Apollo 1" (AS-204), "Apollo 1A" (AS-201), "Apollo 2" (AS-202) and "Apollo 3" (AS-203) but the NASA project designation committee decided on "Apollo 4" for the first (unmanned) Apollo-Saturn V mission (AS-501), with no retroactive renaming of earlier missions. Hence, AS-203 is now sometimes informally (and chronologically) referred to as "Apollo 2" and likewise, AS-202 as "Apollo 3".

Civic and other memorials

*Three public schools in Huntsville, Alabama (home of George C. Marshall Space Flight Center and the United States Space & Rocket Center): Virgil Grissom High School [cite web |work=Huntsville City Schools |url=http://www.hsv.k12.al.us/schools/high/ghs/ |title=Virgil I. Grissom High School |accessdate=2008-06-24] , Ed White Middle School [cite web |work=Huntsville City Schools |title=Ed White MIddle School |url=http://www.hsv.k12.al.us/schools/middle/ewms/index_new.html |accessdate=2008-06-24] , and Roger B. Chaffee Elementary. [cite web |work=Huntsville City Schools |title=Roger B. Chaffee Elementary School |url=http://www.hsv.k12.al.us/schools/elementary/chafes/ |accessdate=2008-06-24]

*Edward White Middle School in White's hometown of San Antonio, Texas. [cite web |work=North East Independent School District - San Antonio, Texas |url=http://www.neisd.net/white/ |title=Edward H. White Middle School |accessdate=2008-06-24]

*Edward H. White II High School in Jacksonville, Florida. [cite web |work=Duval County Public Schools |accessdate=2008-06-24 |url=http://www.duvalschools.org/edwhite/ |title=Edward H. White High School]

*Edward H. White II Elementary School, El Lago, Texas. [cite web |work=Duval County Public Schools |accessdate=2008-07-11 |url=http://www.ccisd.net/school/white.html |title=Edward H. White Elementary]

*Edward H. White II Memorial Youth Center, Seabrook, Texas. [cite web |work=Ed White Memorial Youth Center |accessdate=2008-07-11 |url=http://stall.net/ewmyc/ |title=Ed White Memorial Youth Center]

*Virgil Grissom Elementary School in Tulsa, Oklahoma. [cite web |work=Tulsa Public Schools |title=Grissom Elementary School |url=http://www.tulsaschools.org/schools/grissom/ |accessdate=2008-06-24]

*Three man-made oil drilling islands in the harbor off Long Beach, California are named Grissom, White and Chaffee. A fourth island is named for Theodore Freeman, an Air Force test pilot chosen as an astronaut in 1963 but who was killed while piloting a T-38 jet when it crashed at Ellington AFB.

*A road that formerly ran through Kent County International Airport (GRR) in Grand Rapids, Michigan, Chaffee's hometown, was named Roger B. Chaffee Memorial Boulevard after the airport was moved further from the city limits.

*The Roger B. Chaffee Planetarium is located at the Grand Rapids Public Museum. [cite web |work=Grand Rapids Public Museum |url=http://www.grmuseum.org/planetarium |title=Roger B. Chaffee Planetarium |accessdate=2008-06-24]

*White Hall and Grissom Hall at Chanute Air Force Base (closed, 1993), Rantoul, Illinois.

*The names of Grissom, White and Chaffee are used for streets in Wheatfield NY. These are connected to Niagara Blvd and located near the Bell plant, where the X planes were built in the 1940s. There is a museum dedicated to the work of Bell in the aeronautic sciences.

*Grissom AFB (formerly Bunker Hill AFB, convert|65|mi|km north of Indianapolis, Indiana) was renamed for Grissom on 12 May 1968.

*Two buildings on the campus of Purdue University in West Lafayette, Indiana are named for Grissom and Chaffee (both Purdue alumni). Grissom Hall houses the School of Industrial Engineering (and was home to the School of Aeronautics and Astronautics before it moved into the new Neil Armstrong Hall of Engineering). Chaffee Hall is the administration complex of Maurice J. Zucrow Laboratories where thermal sciences and rocket propulsion are studied.

*Grissom Parkway runs between Cocoa and Titusville, Florida, intersecting White Drive and Chaffee Drive near the Titusville Police Department.

*Virgil I. Grissom Library in Newport News, Virginia.

Remains of CM-012

The "Apollo 1" command module has never been on public display. After the accident the burned-out spacecraft was removed and taken to Kennedy Space Center to be studied for any information that might prevent a recurrence of the tragedy. It was then moved to the NASA Langley Research Center in Hampton, Virginia and placed in a secured storage warehouse. On February 17, 2007 the wreckage of CM-012 was moved approximately convert|100|ft|m to a newer, environmentally-controlled warehouse. [cite news |first=Martin |last=Weil |title=Ill-Fated Apollo 1 Capsule Moved to New Site |work=The Washington Post |page=C5 |date=2007-02-18] Only a few weeks earlier Gus Grissom's brother Lowell publicly suggested CM-012 be permanently entombed in the concrete remains of Launch Complex 34.

Dramatizations

An episode of the HBO miniseries "From the Earth to the Moon" told the story of the Apollo 1 disaster and its aftermath. It starred Mark Rolston as Gus Grissom, Chris Isaak as Ed White and Ben Marley as Roger Chaffee.

ee also

* Apollo program
* List of space disasters
* Joseph Francis Shea

Notes and references

ources

*
* Includes useful data (along with the less useful conspiracy theory).
*

External links

* [http://www.hq.nasa.gov/office/pao/History/Apollo204/ NASA Apollo 1 website]
* [http://www.clavius.org/baron-test.html Baron testimony at investigation before Olin Teague, 21. April 1967]
* [http://www.hq.nasa.gov/office/pao/History/Apollo204/content.html Report on accident]
* [http://www.spaceflighthistory.com/apolloprogram.htm#apollo1 Apollo 1 Crew- U.S. Spaceflight History Biography]


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