A retired U.S. Marine walked onto a concrete median in Washington D.C. on Sunday and stood for a period of 24 hours -- with the hope of bringing awareness to veteran suicide. Retired U.S. Marine Staff Sgt. Tim Chambers, 45, held a salute for 22 minutes at the beginning of the first hour to symbolize the American veterans who take their own life each day. For each hour after, the salute drops by one minute before it eventually counts down to zero. “It’s a very emotional time, very emotional," Chambers' wife, Lorraine Heist-Chambers told Washington's WJLA-TV. “This is something that...