police shows the alleged gunman entering a subway station early the morning of the attack, wheeling the same black cart that was later recovered at the scene. officials say james is the man who donned a gas mask, detonated two smoke bombs, and then fired 33 shots into a packed subway car. after the attack, police say james slipped on to another train car, rode one stop, and escaped, sparking a multistate manhunt. but police did recover some important evidence at the scene, including a .9 millimeter gun, three extended magazines, a hatchet, gasoline, and four smoke grenades. they also found bank cards and a key to this u-haul that investigators say james had rented. a search of the van turned up a heater, some clothing and blankets. they believe he spent at least one night sleeping in the back. i think first and foremost we were looking to get this guy off the street before he did any anymore carnage, brought any more carnage to the city. reporter: his arrest record spans least 15