U.S. Staff Sgt. Daniel Salazar, 56th Maintenance Group hydrazine Mobile Training Team instructor, teaches hydrazine servicing refresher class to Chilean Air Force members at Los Condores Air Base, Chile, Nov. 7, 2018. The Hydrazine MTT gave three days of class room instruction followed by hands on training of servicing hydrazine tanks.(U.S. Air Force photo by Tech. Sgt. Angela Ruiz)