I noticed a little thing, when i was randomly playing maps.
In Cambodia, i started jetting upwards and accidentally hit the esc. button.
Even though the pause menu was infront of me, and the game was actually paused, the jet meter was still depleted.
And when i unpaused, my soldat was "thrown" higher, then i could get to with using the jets. It looked like i shot an m79 under my feet after jumping, to gain height, but the difference was, i didn't.
Useful?