44 A-10 Thunderbolt ground-attack aircraft.

The Air Force has flirted with retiring some A-10s for years, and its 2021 proposal would finally cull that fleet, with the Air National Guard losing 39 and the Air Force Reserve losing seven. (The active Air Force would gain two, for a total of 44 A-10s removed from service.)

The Air Force currently has 281 A-10s and recently finished putting new wings on 173 of them. Boeing got a billion-dollar contract in 2019 to finish re-winging the A-10s that needed them.

Once those 44 aircraft are removed from service, the Air Force will proceed with re-winging those that remain, an Air Force spokeswoman told Military.com.