From fighting fires to weight-lifting competitions, a look at the photographs recognized in the annual contest.
Feature, 1st placeMembers of the Special Tactics Training Squadron enter the pool with their hands and feet bound in this undated photo. The exercise teaches students to remain calm in the water during stressful situations, skills that are vital during real-world operations.Master Sgt. Jeffrey Allen/U.S. Air Force
Migrating flamingos fly over Israel, Switzerland’s tallest pine tree is felled; Virgin Galactic test flight reaches space; Trump, Pelosi and Schumer spar over government shutdown and border security; more images from around the world.