Researching UFOs

First alleged sighting of UFOs: June 1947, in Central Washington State. Kenneth A. Arnold, an American aviator and businessman, claimed to have seen nine unusual objects flying in a chain near Mount Rainier, Washington

Famous UFO crash site: Roswell, New Mexico (December 1947). Authorities in Roswell claimed having found the proof of alien life. When they later retracted their story, Jesse Marcel, the original military investigator, declared that there was a government-ordered cover-up and pointed at the top-secret Area 51.

Quote from

"From 1979 until his death, Jesse Marcel's story went through many evolutions.  In particular, Jesse's military  career in the Army Air Force seems to have improved over time. It should be noted that Jesse Marcel's military career was entirely honorable.  His descent into mythomania apparently occurred after his departure from the military."

What is RAAF?