Here are the answers to Rick Keyt’s F-4 trivia questions:

1.  How many concentric circles on the trim button?  13

2.  How many steps on the removable ladder?  7

3.  How many safety pins were in the Martin Baker ejection seat?  7

4.  How many holes in the variable inlet ramp? Are you kidding.  Nobody ever wasted the time to count all those little suckers.