There were lots of bright objects in the sky that night, like the moon, Saturn, Jupiter, Fomalhaut, Rigel, Sirius, Betelguese, and Aldeberan. (Not saying it was one of these as the USAF would never scramble to chase a celestial object - say like Venus.)

In the video, even the test pilot refused to believe it was alien. He definitely thought it was something from a "black" project. The SR-71 was kept at Beal AFB and could fly at over 85,000 ft. It was new tech in 1965.