US Marine Corps photo by Cpl. Joseph Helms
Chip Somodevilla/Getty Images
US Air National Guard photo by MSgt Christine Wood
Petty Officer 3rd Class John Martinez
Reuters/Ahmed Jadallah
US Navy illustration/Released
US Navy photo/Petty Officer 3rd Class Scott Pittman
US Air National Guard photo by Senior Airman Diana Snyder
MAHMUD HAMS/AFP via Getty Images
Yevhenii Vasyliev/Global Images Ukraine via Getty Images