Learn to barricade an inward opening door in the event your office or home falls victim to an active shooter. Clint Emerson is a Navy SEAL (Ret.) and the author of 100 Deadly Skills.
If you're going to perform high-speed maneuvers, you've got to have the tire pressure to back you up. Retired Navy SEAL Clint Emerson — author of 100 Deadly Skills — shows you how get your tires ready.