Comment on US: No Plan to Rush Afghan Exit

Officials say the US mission in Afghanistan will not change in the wake of an American soldier's attack on civilians, and troops are still on course to hand over security control to Afghans by the end of 2014.Taliban Vows Revenge After Afghan KillingsObama: Afghan Shooting Is 'Heartbreaking'VIDEO: U.S. Ambassador to Afghanistan Crocker Reacts to Killings Afghanistan Shooting Suspect's US Base 'Most Troubled' US Family Loses 2 Sons in Afghanistan WarPHOTOS: Family Mourns Deaths