HURLBURT FIELD, Fla --   Airman 1st Class Taylor Hill, an aircraft structural maintenance journeyman with the 1st Special Operations Maintenance Squadron, puts on a full-face respirator mask before painting an engine kit at Hurlburt Field, Fla., June 29, 2016. Corrosion specialist wear these masks to protect themselves from the toxic fumes and residue used in materials for corrosion prevention such as paint. (U.S. Air Force photo by Senior Airman Andrea Posey)