Astronaut Ed White's Gemini 4 Spacewalk
This Discovery Channel documentary film excerpt shows a UFO which was filmed during the first U.S. spacewalk on 3 June 1965.
Two seconds into the video one can see that the unknown object flies in the opposite direction of the Gemini 4 spacecraft:
Edward Higgins White, II was an engineer, U.S. Air Force Lieutenant Colonel and NASA astronaut.
The NASA Gemini 4 mission:
Launch date: 3 June 1965 -
Landing date: 7 June 1965.