This is what my father saw in WWII as a P-38 fighter pilot dive bombing German supply trains and munitions factories. He also saw German built jet aircraft breaking the sound barrier.
This clip is a fictional account from the Steven Spielberg TV mini-series Taken. Its very much like the description my father gave of mission over Germany during a conversation I had with him while working for him during my high school summer break. Dad always believed UFOs were real. He saw them. My heart jumped when I saw this sequence on TV. Remember these men had no preconceptions of UFOs, they didn't know what they were. WWII pilots called them "foo-fighters", perhaps a corruption of French words "le feu" for "the fire",Wikipedia has an article on foo-fighters here.
After this seeing this clip I realized the remarkable youth my father had. Unfortunately he had already passed away when this aired and I was unable to ask him any more questions. Do we every really know who our parents were?