From Inside Edition.

The rampage in Midtown Manhattan that took the lives of four innocent people may change the way we all go to work. Businesses are ramping up security across America in the wake of the shooting spree. 345 Park Avenue, where the tragedy unfolded, is one of New York’s most secure skyscrapers, but it was not enough to stop the lone gunman. Many are wondering how the gunman was able to walk across the plaza carrying a 3-foot-long rifle.