How U.S. stealth bombers struck Iran’s nuclear sites

Iran’s attack on a U.S. military base in Qatar on Monday follows the largest operation ever carried out by U.S. B-2 stealth bombers, according to the chairman of the Joint Chiefs of Staff. Ret. U.S. Air Force Lt. Gen. Mark Weatherington joins CBS News to explain what goes into carrying out a mission on America’s most expensive stealth bomber.