National Guard troops in Washington for the inauguration, USS Mount Whitney's 50th anniversary, the upcoming Army Best Medic Competition and more in this week's Frontline Photos.
A French court on Thursday convicted an Islamic State operative over a train attack five years ago that was foiled with the dramatic intervention of three American passengers.
Alek Skarlatos, 28, told a Paris court at the gunman's trial that he yanked a pistol from the attacker’s hand, turned it on him and pulled the trigger, but the gun did not fire.