WHITEMAN AIR FORCE BASE, Mo. – Staff Sgt. Tyler Brantley, 509th Aircraft Maintenance Squadron dedicated crew chief, takes a knee in front of the “Spirit of Arizona” B-2 Stealth Bomber as it taxis in March 13. Sergeant Brantley is the dedicated crew chief assigned to the Spirit of Arizona and friend of Staff Sergeant Zachery Teague, 509th Aircraft Maintenance Squadron. Sergeant Teague was the 509th Maintenance Group Crew Chief of the Year for 2008. (U.S. Air Force photo/ Airman 1st Class Carlin Leslie)