Add Yahoo as a preferred source to see more of our stories on Google. The Russian army has set up a deeply echeloned system of engineering barriers in the temporarily occupied territories of Ukraine, ...

U.S. Marine Corps Lance Cpl. John Cisneros, a rifleman with Golf Company, 2nd Battalion, 5th Marine Regiment (Reinforced), Marine Rotational Force – Darwin 24.3, crawls through a tunnel as a part of ...

The Navy SEAL obstacle course is designed to push elite warriors to their absolute limits - and I decided to take it on. From towering walls and rope climbs to brutal endurance challenges, this course ...

Parkour, an exercise regimen based on military obstacle course training, has arrived in Brooklyn. And it probably comes as no shock that the first gym to offer it is in Bushwick. Today the Brooklyn ...