One of the most iconic photos to emerge from Monday's tragic bombings at the Boston Marathon is that of a man in a cowboy hat, rushing a victim who has had his legs blown off to safety.
The man in the cowboy hat is Carlos Arredondo. He is an anti-war activist who was at the race to honor his dead sons -- one of which was killed serving in Iraq. Arredondo was in Boston to hand out American flags in honor of fallen soldiers. By the end of the day, his last flag would be soaked in blood, used as a tourniquet to save one of the bomb victim's lives.
Arredondo's journey began in his Hollywood home in 2004 when he learned that his son had been killed in action on his second tour of duty.