Nightly News | October 12, 2011
BRIAN WILLIAMS, anchor: A military investigation has found no major mistakes were made in the August operation in Afghanistan that ended with a Chinook twin rotor helicopter being shot down killing 30 Americans, including those 22 Navy SEALs . No disciplinary action's being taken against anyone involved. One military official called it a standard mission during which a bad guy got off a lucky shot, hitting the helicopter's tail rotor with an RPG . Today's report won't be enough for some who thought the Chinook full of American personnel needed more force protection around it and was exposed and open to enemy fire.