A selection of longboards is laid out at Robb Field Skate Park in San Diego Dec. 9 before the 4th annual Skate for the Troops event. Approximately 50 participants and supporters came to the event to raise money for the Semper Fi Fund.Read more:&nbsp;http://www.dvidshub.net/image/798162/skate-troops-marks-4th-year#.UN51zYnjnmA#ixzz2GPgGogBP