Three US airmen and two soldiers were killed in Iraq, the US military said Sunday. A car bomb in Baghdad on Sunday killed three airmen assigned to the 447th Expeditionary Civil Engineer Squadron's Explosive Ordnance Division, the military said in a statement. One airman was also injured in the explosion. A soldier died Saturday from small arms fire in a southwestern section of Baghdad, the military said. Another soldier died Friday from combat wounds sustained in Iraq's volatile western Anbar province.