REUTERS/Maxim Shemetov
Sgt. 1st Class Jason Epperson/US Army
Anthony Sweeney/US Army
Leo Correa/AP Photo
US Navy photo/Petty Officer 3rd Class Scott Pittman
aviation-images.com
Sean Gallup/Getty Images
U.S. Army Security Assistance Command
Oleksandr Gusev/Global Images Ukraine via Getty Images