An OT&E formation in the very early days of the F-16 program. Three USAF vipers of the OT&E are flying in formation with two Norwegian F-104G Starfighters. [USAF photo]

USAF F-16B block 15 #90-0948 is used by LMTAS to perform test flights, seen here at NAS Fort Worth on January 9th, 2006. [Photo by Frank McCurdy]

An F-16 Fighting Falcon (left), F-15 Eagle (front), F-4 Phantom (right) and an A-10 Thunderbolt II (back) fly in a diamond formation over Tucson, Ariz., Sunday, March 5, 2006, during the 2006 Heritage Conference. The conference combines different U.S. aircraft from more than...

USAF F-16A block 1 #78-0001 seen at Langley AFB in August of 1993 where it is preserved on a pedestal. [Photo by Dirk A. Geerts]

USAF F-16D block 50 #90-0848 seen at Fort Worth JRB in March of 1996 in LMTAS colors. [Photo by Dirk A. Geerts]

An air-to-air front view of three F-16 aircraft flying in close formation above Edwards AFB on May 26th, 1979. [USAF photo by Cunningham]

An air-to-air left side view of USAF F-16A block 15 #80-0543 on a vertical climb during the Farnborough Air Show on September 12th, 1982. The aircraft is equipped with AIM-9 Sidewinder missiles. [GD photo]

An air-to-air right side view of USAF F-16A block 15 #80-0550 during a verticular stabilizer test on November 3rd, 1983. The F-16 is armed with AIM-9 Sidewinder air-to-air missiles. [USAF photo by Reynolds]

Top view of a USAF F-16C with an unusual configuration. Note the AGM-84 on the right site and the AGM-65 on the left site. [Photo by George]