Dr. Rory A. Cooper, right, founder and director of the University of Pittsburgh Human Engineering Research Labs; Marine Corps Sgt. Maj. Ronald L. Green, center, sergeant major of the Marine Corps; and Sgt. Maj. Joseph Gray, Marine Barracks Washington, participate in the ceremony during the sunset parade at the Iwo Jima War Memorial, Arlington, Va., June 28, 2016. Sunset parades are held as a means of honoring senior officials, distinguished citizens and supporters of the Marine Corps. ( Marine Corps photo by Lance Cpl. Paul A. Ochoa)

---

Size: 5520px × 3680px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., .., america, bugle, cooper, corps, director, dr., drill, drum, engineering, green, honorable, human, iwo, jima, maj., marine, memorial, military, parade, performs, platoon, research, ronald, rory, service, sgt., silent, sunset, usmc, usmccombatcamera, war, women