RICHMOND, Va. - John Allen Muhammad was executed Tuesday night for the sniper attacks in 2002 that left 10 dead and spread such fear people were afraid to go shopping, cut grass or pump gas. The three-week killing spree in Virginia, Maryland and Washington, D.C., was carried out with a teenage accomplice who is serving life in prison without parole. Muhammad, 48, died by injection at 9:11 p.m. EST after he exhausted his court appeals and Gov. Tim Kaine denied clemency. Muhammad's attorneys earlier had asked Kaine to commute his sentence to life in prison because they said he was...