This has been a subject on RP. In that discussion the Air Force was actually going to various places where the airplanes were on display. They were taking necessary parts off of those no lanes to use on the combat planes. That is so disgusting and insane. It's still going on so the planes the Air Force uses, can still be usable.
The Air Force is flying the smallest, oldest fleet of aircraft in its history.
First flown in the 1970s, the Air Force could potentially fly the aging F-15 Eagle into the 2040s, according to a top Air Force official in charge of fighters and bombers.
It’s another sign the Air Force may have to keep planes in the air years longer than originally planned while it flies the smallest and oldest fleet in its history.