Master Sgt. Brian Achen, C-130 Lead Propulsion Mechanic

Master Sgt. Brian Achen, C-130 Lead Propulsion Mechanic (left), and Senior Airman Neil Popham, Propulsion Mechanic, from the 165th Airlift Wing, Georgia Air National Guard, perform an engine run-up operations check after replacing an engine valve housing on a 123rd Airlift Wing, Kentucky Air National Guard C-130 Hercules, Savannah, Ga., Sept. 29, 2017. The 165th AW is serving as a hub and spoke operation for aircraft flying to and from Puerto Rico and the U.S. Virgin Islands providing vital supplies and personnel needed for relief and recovery efforts. (U.S. Air National Guard photo by Master Sgt. Darin Hubble)