The engineer of the Amtrak train that derailed Tuesday night, killing seven, remembers driving the train to the general crash area in Philadelphia, but he doesn't remember the crash itself, his attorney tells ABC News. Brandon Bostian, 32, does remember being banged around in the crash and ultimately regaining consciousness and calling 911, but he has "no explanation" for what caused the accident, his lawyer says, adding that the Queens resident had "no health issues to speak of" before the crash and was not taking any medication. Bostian, who suffered leg injuries, a concussion, and a head injury requiring 14 staples, has given police a blood sample and his cellphone and is cooperating with investigators.