X-Cave. X-Cave has two vertical joint passages that meander through a large layer of limestone, putting you up-close to beautiful cave formations. The name of this cave refers to the configuration of its passages which cross in the center of the cave to form the letter X.
The total count of 5,032 aircraft includes all manned and unmanned aircraft in the Air Forceâs inventory. This report assesses the Air Forceâs fleet of tactical aircraft which, as noted in the introduction and described below, requires 1,200 planes to execute a two-MRC strategy.
The official birthday of the US Air Force is 18 September 1947.. On 18 September 1947, the Army Air Forces became the United States Air Force as a separate and equal element of the United States armed forces. The fledgling Air Force quickly established its own identity.