Even as a child, U.S. Army Staff Sgt. Erick Pagan Rivera, now a drill sergeant with Charlie Company, 16th Ordnance Battalion, at Fort Gregg-Adams, Virginia, showed a modest expertise in achieving ...

"And now you got drill sergeants out there having to have to hump a ruck down the avenue … They don't know when it's coming. Their mind never gets to shut off. Their bodies never get to fully ...

Just days before round one, the 27-year-old suffered a freak injury during a ruck drill at training, forcing him to undergo surgery to repair a detached tendon where the hamstring meets the knee.