436th CE HVAC warms up Dover
Senior Airman David Ulman, 436th Civil Engineer Squadron, Heating, Ventilation, and Air conditioning section, pours dirty water from a heater unit out on the ground near Dorm 430 while troubleshooting a problem on Jan. 15, 2015, at Dover Air Force Base, Del. Trapped water inside the heater unit didn't allow heat to be transferred by the unit. (U.S. Air Force photo/Greg L. Davis)