Slideshow: Americans killed in Afghanistan helicopter attack
Navy SEAL Matthew Mason, 37, of Kearney, Mo., lost part of his left arm in combat in Iraq in 2004, but that didn't stop him from returning to his unit and continuing to fight. "He could have gotten out of combat," family friend Elizabeth Frogge told the AP. "He just insisted on going back." Mason is survived by his wife, who is expecting a child, and two toddler sons. (ABC News)
