Blue Gemini[1] was a United States Air Force (USAF) project first proposed in August 1962 for a series of seven flights of Gemini spacecraft to enable the Air Force to gain crewed spaceflight experience prior to the launch of the Manned Orbital Development System, or MODS. The plan was to use off-the-shelf Gemini spacecraft.
It began as the Military Orbital Development System, created by the US Air Force Space System Division (SSD) in June 1962.[2][3]