My first lecture during ground training as a JP was on the engines. One cross section slide of the aircraft's side view. Script went:
The Lightning has 2 engines, one on top of the other. the one on the top is slightly further back to give the pilot somewhere to sit!
Best Xmas present was a F3 with the ventral tank off. Airborne before the RHAG and climbing vertically until you have just enough fuel to come down!