Unknown light travels fast and takes impossible 90 degree turn.

In 1966 I was a 1st Lt. USAF attached to NATO (SHAPE). Along with two other officers and several French civilian friends and wives, we all observed a bright light traveling from north to south at a fast rate of speed. We couldn't believe it when we saw the light take a 90 degree right turn and zoom off at a speed greater than we knew to be possible by known aircraft. It was a very dark night with no visible stars. We were all outside at a private home and were not drinking. The home was along the Seine River about one mile from the old Patton Bridge near Samois sur Seine. We (the three USAF Officers) talked later in private and were in concert with what we had seen. We all had very high security clearances (mine: Top Secret, Cosmic and Atomal).
Date is approximate.  We spoke with this individual, and he sounded to us to be quite credible.  We have invited the individual to attempt to contact the other witnesses, and secure statements from them.  PD