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.
A US Air Force F-22 Raptor fighter aircraft flies over Alaskan terrain after refueling, January 5, 2013.US Air Force. The US Air Force is the world's premier aerial power. With 39 distinct types of aircraft, and many more subvarieties of each airframe, it is easy to understand why the US Air Force has no peers. Each airframe is custom-made to carry out a select mission effectively, and each pilot knows their aircraft perfectly.