U.S. Air Force Staff Sgt. Erica Jacobs, a mission impaired awaiting parts (MICAP) supervisor assigned to the 439th Supply Chain Operations Squadron, provides guidance to Airman 1st Class Domonique Barnes, a MICAP technician assigned to the 439th SCOS at Langley Air Force Base, Va., March 16, 2016. Jacobs and Barnes ensure Air Force installations receive the correct parts to aircrafts that need repairs to accomplish their mission. (U.S. Air Force photo by Airman 1st Class Derek Seifert)