11am on Sunday: America's Most Dangerous Hour

11 o'clock on Sunday morning is now one of the most dangerous hours of the week in America, pastors and church security officials say. Churches have long been concerned about losing members as church attendance plummets across denominations. Now they have a new worry: protecting those members that remain. Houses of faith are one of the few public communal spaces in the country that were created to embrace all comers, including broken or disturbed people on the fringes of society.