Exit hole Pentagon. Let me try and explain this picture. A hollow aluminum tube (Boeing 757) flying 500 mph (impossible at sea level) flew into the Pentagon and managed to plow through three seperate steel reinforced concrete buildings and the internal columns leaving this perfect punch out hole on the inside of ring "C". All this from a guy that had never flown a jet and could barely fly a Cessna! Also notice how he managed to leave the lawn of the pentagon perfectly intact leaving absolutely no evidence of a plane crash. Major Douglas Rokke, PhD, U.S. Army: "When you look at the damage, it was obviously a missile."