Northrop SM-62 Snark, c1960. The Snark’s powerful solid-rocket boosters burned for four seconds, bringing the missile’s speed up to about 300 mph, then the empty booster casings dropped away as the jet engine took over. (U.S. Air Force photo)

Northrop SM-62 Snark, c1960. The Snark’s powerful solid-rocket boosters burned for four seconds, bringing the missile’s speed up to about 300 mph, then the empty booster casings dropped away as the jet engine took over. (U.S. Air Force photo)

Boeing B-52 during the Southeast Asia War. (U.S. Air Force photo)

Boeing B-52 during the Southeast Asia War. (U.S. Air Force photo)

Col. Robin Olds seated in an F-4 fighter in Southeast Asia. (U.S. Air Force Photo)

Col. Robin Olds seated in an F-4 fighter in Southeast Asia. (U.S. Air Force Photo)

North American XB-70 Valkyrie at the National Museum of the United States Air Force, Dayton, Ohio. (U.S. Air Force photo.)

North American XB-70 Valkyrie at the National Museum of the United States Air Force, Dayton, Ohio. (U.S. Air Force photo.)

"The XB-70, Mach 3 Bomber - 1961" Artist: John McCoy.
via defenseimagery.mil

"The XB-70, Mach 3 Bomber - 1961" Artist: John McCoy.

via defenseimagery.mil

North American XB-70A Valkyrie fuselage final assembly. Photo taken April 22, 1962 after the three fuselage sections had been assembled. (U.S. Air Force photo)

North American XB-70A Valkyrie fuselage final assembly. Photo taken April 22, 1962 after the three fuselage sections had been assembled. (U.S. Air Force photo)

Air Progress. October, 1965.
via JP Dubs

Air Progress. October, 1965.

via JP Dubs

General Dynamics F-111A (S/N 63-9768, third pre-production aircraft) with unswept/swept wings at the aircraft rollout on Oct. 15, 1964. (Photo: U.S. Air Force 1, 2, animgif: me)

General Dynamics F-111A (S/N 63-9768, third pre-production aircraft) with unswept/swept wings at the aircraft rollout on Oct. 15, 1964. (Photo: U.S. Air Force 1, 2, animgif: me)

Lockheed F-104A-15-LO (S/N 56-0769 and 56-0781) in flight with Lockheed EC-121 (S/N 55-0127).  Photo: U.S. Air Force.

Lockheed F-104A-15-LO (S/N 56-0769 and 56-0781) in flight with Lockheed EC-121 (S/N 55-0127).  Photo: U.S. Air Force.

F-100A (S/N 53-1663), F-101 (S/N 53-2430), F-102 and F-104 (S/N 53-7786) on the ramp. (U.S. Air Force photo).

F-100A (S/N 53-1663), F-101 (S/N 53-2430), F-102 and F-104 (S/N 53-7786) on the ramp. (U.S. Air Force photo).