Photos: 2011 ACC Aerial Demo Teams certify Published Feb. 7, 2011 By Justin Oakes and Scott Knuteson Air Combat Command Public Affairs LANGLEY AIR FORCE BASE, Va. -- Every year the Air Combat Command Aerial Demontration Teams must receive certification given by the ACC commander prior beginning any performance or starting air show tours. The Viper West, A-10 East and F-22 Raptor demo teams were just a few that converged at Langley Air Force Base, Va., Feb. 1-3, to practice and showcase their aircrafts' capabilities. Click here to view the slideshow.