Air Force Senior Airman Tyler Spohn removes a pitot tube safety cover from an F-16D Fighting Falcon aircraft as he prepares the jet for launch during Operation Snowbird on Davis-Monthan Air Force Base, Ariz., Feb. 26, 2014. Spohn, a crew chief, is assigned to the New Jersey Air National Guard's 177th Fighter Wing. Air Force Senior Airman Tyler Spohn removes a pitot tube safety cover from an F-16D Fighting Falcon aircraft as he prepares the jet for launch during Operation Snowbird on Davis-Monthan Air Force Base, Ariz., Feb. 26, 2014. Spohn, a crew chief, is assigned to the New Jersey Air National Guard's 177th Fighter Wing. SHARE: Download: Full Size (1.95 MB) Tags: Photo Essays Credit: VIRIN: 907253-V-XAU97-640.jpg Photo Gallery