NASA Deputy Administrator Lori Garver, left, and White House Office of Science and Technology Chief of Staff Jim Kohlenberger, right, listen to Mr. David W. Thompson, Chairman and Chief Executive Officer Orbital Sciences Corporation as he gives a tour of the Orbital Sciences facilities on Tuesday, Jan. 11, 2011 in Dulles, VA. Photo Credit: (NASA/Bill Ingalls)

Canister in the SSPF, October 21, 2008

Rotation in progress at the CRF, April 13, 2010

Canister open in VPF. Payload for STS-5, SBS-3, & Anik C-3, being loaded into the canister

Installing the Long Duration Exposure Facility (LDEF) using the payload strongback, into Canister 1 O&C high bay, March 6, 1984

Loading payload trunnion into the payload canister fitting in the O&C high bay, March 6, 1984

Orbiter payload canister being raised into the PCR at Launch Pad 39A - 1980

Removal of payload from the canister to work stand in the O&C high bay, November 18, 1985

Horizontal loading & unloading of payload canister with test weights in O&C high bay, November 12, 1980

Canister in the VPF, March 30, 1984

Canister rotation in the VAB

Canister inside the clean room of VPF with doors partially open and payload visible

Installing the Long Duration Exposure Facility (LDEF) using the payload strongback, into Canister 1 O&C high bay, March 6, 1984

Vertical cleaning of the canister prior to payload processing

Original appearance of the orbiter payload canister before painting, August 13, 1980

Transferring the Long Duration Exposure Facility (LDEF) into Canister 1 for STS-41C, March 6, 1984

Payload canister with the original rain cover en route from the O&C to the VAB, November 11, 1980

Canister 1 and canister 2 inside the VAB

NASA Deputy Administrator Lori Garver, listens during a tour of the Orbital Sciences Corporation, Mission Operations Center, Tuesday, Jan. 11, 2011 in Dulles, VA. Photo Credit: (NASA/Bill Ingalls)

Lowering canister to the transporter bed in the vertical position at the CRF, April 13, 2010

Manual manipulation of the cables during canister rotation in the VAB

Canister's doors open in the SSPF, October 21, 2008

The test area where the second and final qualification motor (QM-2) test for the Space Launch System’s booster is seen through the window of a camera bunker, Sunday, June 26, 2016, at Orbital ATK Propulsion Systems test facilities in Promontory, Utah. The test is scheduled for Tuesday, June 28 at 10:05 a.m. EDT (8:05 a.m. MDT). Photo Credit: (NASA/Bill Ingalls)

The quench system arm and nozzle are seen at the test area where the second and final qualification motor (QM-2) test for the Space Launch System’s booster will take place, Sunday, June 26, 2016, at Orbital ATK Propulsion Systems test facilities in Promontory, Utah. The test is scheduled for Tuesday, June 28 at 10:05 a.m. EDT (8:05 a.m. MDT). Photo Credit: (NASA/Bill Ingalls)

The test area where the second and final qualification motor (QM-2) test for the Space Launch System’s booster is seen Sunday, June 26, 2016, at Orbital ATK Propulsion Systems test facilities in Promontory, Utah. The test is scheduled for Tuesday, June 28 at 10:05 a.m. EDT (8:05 a.m. MDT). Photo Credit: (NASA/Bill Ingalls)

Exterior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Aerial view of SSMEPF construction, August 11, 1997

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Detail view of SSMEPF construction, May 23, 1997

Interior View of Orbiter Processing Facility 3

Exterior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

View of OPF High Bay No. 1, 513 workstand installation, August 23, 1977

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Orbiter Processing Facility High Bay No. 3, 13 platforms and payload bay, looking northeast, July 31, 2006

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Exterior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

View of OPF High Bay No. 1 and Low Bay construction, 1976

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Exterior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

View of OPF High Bay No. 1, Level 13 platform installation, July 8, 1977

View of the second level in the Vertical Processing Area, SSMEPF, August 17, 1998

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Interior View of Orbiter Processing Facility 3

Aerial view of OPF-3, March 14, 1998

View of OPF High Bay No. 1 and Low Bay construction, 1976