Familiarise yourself with the SANDY aircrew rescue missions in Vietnam.

Vast amounts of hardware and many American lives were lost trying to recover downed pilots, even when it was known it was a body retrieval operation.

For one famous example, the rescue of BAT21 Bravo resulted in the loss of five aircraft, the deaths of eleven and two taken as POWs.

It is a point of principle that the USAF does not apply a 'cost effectiveness' test to aircrew recovery.