The Air Force's $4.2 billion unfunded priorities list includes $1.3 billion for 12 more F-15EX aircraft and $360 million for F-35 Joint Strike Fighter sustainment. For the first time in recent years, the service's UPL does not include funding to buy additional F-35s, but instead focuses on sustainment, seeking about $175 million for 20 F135 engine power modules and $186 million for broader sustainment requirements. It's not clear how the additional funding, if granted, would affect the program's long-term sustainment...
