For the DOD, replacing its aging tactical aircraft fleet is remarkably difficult ... meeting various maintenance and operational needs. The F-22s will take a great deal of time and resources ...

The US Armed Forces are struggling to keep tactical aircraft ‘mission ... such as ageing aircraft, maintenance challenges and supply support issues, the latest review points to another unique ...

The GAO said that "none of the 15 tactical aircraft variants met their mission ... and $1.87 billion for the Navy was spent on operations and maintenance, with yearly spending in this area growing ...