"This photograph of the Gemini-7 spacecraft was taken from the hatch window of the Gemini-6 spacecraft during rendezvous and station keeping maneuvers at an altitude of approximately 160 miles."
Date: December 15, 1965
NASA ID: S65-63113, S65-63171, S65-63188, S65-63189
The evolution of the tail turret of the Boeing B-52 Stratrofortress bomber, from .50 cal to 20mm
After the gulf war if was finally removed and replaced with a stronger ECM suit, as the USAF deemed it obsolete.
Personally, the 20mm version could have been turned into a CIWS against missiles, basically just needing a new radar and fire control system, but alas, weight savings means a lot in aircraft.聽