Believe me, some of the flying I do is enough of a workout that I can't climb out of the cockpit at the end of the day, and there have been days when my legs hurt so badly from the rudder work and my arms were so tired I literally couldn't get out of the seat...I know you'd like to believe that the military aviator experiences things in ways that nobody else could possibly conceive...but the truth is that flying is flying, and jumping from one airplane to another or lifting a heavy bag isn't exactly a hard days work.
jump in the crew bus,
That does sound tough.