The “Towers of Light” display illuminates the night sky, honoring those who lost their lives in the Sept. 11, 2001, attack at the Pentagon in Arlington, Va., Sept. 9. (Air Force Staff Sgt. Brittany A. Chase/DoD)
A U.S. Navy sailor assigned to the "Ghost Riders" of Helicopter Sea Combat Squadron 28, Det. 1, looks out the side of an MH-60S Sea Hawk over Sicily, Italy, Aug. 8. (Sgt. William Chockey/Marine Corps)
Air Force Maj. Kristin "BEO" Wolfe, F-35A Lightning II Demonstration Team pilot and commander, flies over the Toronto skyline during the 2021 Canadian International Air Show Sept. 4. (Capt. Kip Sumner/Air Force)
A "fireball" detonation marks the mass re-enlistment of soldiers with the Division Special Troops Battalion, 3rd Division Sustainment Brigade and 541st Combat Sustainment Support Battalion on an explosive ordnance disposal range at Camp Buehring, Kuwait, Sept. 8. (Spc. Elorina Santos/Army)
Recruits with Delta Company, 1st Recruit Training Battalion, run up the Reaper during the crucible at Marine Corps Base Camp Pendleton, Calif., Sept. 2. At the top of the Reaper, recruits received the Eagle, Globe and Anchor marking their transformation to Marines. (Cpl. Grace J. Kindred/Marine Corps)
An airman from Task Force-Holloman plays with a child at the camp for Afghan refugees on Holloman Air Force Base, N.M., Aug. 31. (Staff Sgt. Kenneth Boyton/Air Force)
Marine Lance Cpl. Jonathan Arreguin Perez, a rifleman assigned to 2nd Battalion, 3rd Marines, 3rd Marine Division, sets security during the Indo-Pacific Warfighting Exercise ion Okinawa, Japan, Aug. 31. (Lance Cpl. Scott Aubuchon/Marine Corps)
Sailors heave a line aboard the aircraft carrier George H.W. Bush during a replenishment in the Atlantic Ocean Sept. 9. (Navy)
Officers salute an American flag unfurled over the side of the Pentagon at sunrise on the 20th anniversary of the 9-11 terrorist attacks at the Pentagon in Arlington, Va. (E.J. Hersom/DoD)