Sean Gallup via Getty Images
Kostiantyn Liberov/Libkos/Getty Images
Contributor via Getty Images
AP Photo/Efrem Lukatsky
YouTube/Ukrainian Air Force
GAVRIIL GRIGOROV via Getty Images
Courtesy of Rinat Ahkmetov's Steel Front
Global Images Ukraine via Getty Images
Russian Defense Ministry / Handout/Anadolu Agency via Getty Images
US Army photo by Patrick A. Albright