Welcome to the our channel for a feature on the C-5 Galaxy and the surprising challenges behind maintaining this aircraft which is still the largest aircraft in the US Air Force fleet for several decades now. I was a crew chief and ultimately a production supervisor on C-5's. I loved the aircraft as it was a thinking person's aircraft. It had a ton of different systems that other aircraft simply don't have and you were always learning something new about it. I was a C-5 maintenance troop in the 80's and then went on to finish collage and was selected to attend OTS and pilot training. I was assigned to fly the C-5 at both Travis and Dover. The nitrogen system described in the video was done so incorrectly, yes nitrogen is used in landing gear struts, but the servicing of the system in the video is the system that fills the fuel cells as fuel is burned off to make the fuel cells non explosive. It also serves as a fire fighting system for under floor and gear wells. Brings back some great memories. I've got about 2500 hours in "FRED" as an instructor pilot in both tactics and aerial refueling (two tours at Travis AFB, '91-'94 and '97-'00). Surprisingly this gigantic airplane is relatively easy to fly, but taxiing this behemoth is another matter; it's like trying to move a building with wings!