Cam Edwards speaks with Jarrett Grimes, a Homeland Security Agent from Atlanta, Georgia who has been competing on the third season of The History Channel's Top Shot series. Grimes was eliminated last night in a round that involved using a cannon called a Hotchkiss Mountain Gun. Competitors shot two-pound projectiles at four targets set at different distances. Grimes talks about his experience on the show. Originally aired 9/7/2011.