First Lt. Andrew Klausner, 509th Maintenance Operations Squadron flight commander, and Master Sgt. Michael White, 509th MOS B-2 computer-aided design manager, review design drawings at Whiteman Air Force Base, Mo., May 15, 2013. The reviewing engineer ensures the drawings are accurate in building specifications for aircraft or tools. (U.S. Air Force photo by Airman 1st Class Keenan Berry/Released)