 It's something Jensen has built his life around since serving in the Marine Corps. He said he was just 17 years old when he got to Vietnam, where he spent most of his three-year tour. He said he struggled for years after coming back and eventually found solace in a church where he helped local youth. That's where he learned giving back to others also helped him in his recovery from PTSD. Today's 60 Seconds of Service is brought to you by Prevagen. Prevagen is the number one pharmacist-recommended memory support brand. You can find Prevagen in the vitamin aisle in stores everywhere.