.... STORY CAPTION: DOD in Photos: 2020 This collection showcases the work of U.S. military photographers in 2020, when U.S. service members continued to conduct around-the-clock training and operations worldwide to ensure the nation's security, even while responding to the coronavirus pandemic. Firefighters from the 436th Civil Engineer Squadron and Magnolia Volunteer Fire Company Station 55, from Delaware, spray down an aircraft-fire trainer during a live-fire-burn exercise at night Sept. 28, 2020, on Dover Air Force Base, Delaware. Total Force and civilian fire companies in the surrounding community often partner with Dover AFB to complete annual training requirements. (U.S. Air Force photo by Senior Airman Christopher Quail) Where: Dover Air Force Base, Delaware, United States When: 28 Sep 2020 Credit: DOD//Cover-Images.com **Editorial Use Only**