Gloves left on the canopy rail Newt??
(or worse still down the intakes of an F-4, like all sorts of things down there like maps etc................)
When the hooter went at Wildenrath Battle Flight the HAS doors would start to slowly open automatically. If you were quick you would sprint through the opening gap to the ac. One first tourist was so quick he caught his jacket straps on the large HAS door lock arms, and as a result this pivoted his head into the door edge, which gave him a nasty cut. No snags, bonedome on and scramble. Five mins later, when established in the climb out to the east, the blood from the cut started dripping off his forehead...........