All kidding aside, I did witness a T-33 blow up during over-wing refueling because the aircraft was not grounded. Now the fuel was JP-4, which has a much lower flash point than Jet-A.
Well I actually did not see the actual explosion, I was standing around the corner of a hangar and saw a flash, heard the explosion and then felt the heat. When I did get around the corner of the hangar I saw what was left of one T-33 and two other T-33s on fire.
Nasty business that was.
