** FILE ** A helicopter takes off from the West Nickel Mines Amish School, in which a gunman killed five girls and injured five more, in Nickel Mines, Pa., Oct. 2, 2006. From the moment a gunman began shooting 10 girls in the now-demolished schoolhouse Oct. 2, 2006, two and a half agonizing minutes ticked by before state police were able to force their way into the barricaded building, according to newly revealed details about the siege. The Pennsylvania state trooper in command at the standoff says an important lesson was learned by that delayed entry and reinforced in April by the Virginia Tech massacre: The nation's front-line police officers need better training and more equipment to deal with barricaded gunmen holding hostages, including battering rams and forced-entry tools.(AP Photo/Matt Rourke)