many impact from a projectile. >> the fbi specifically looking at the lower left side of that windshield of amtrak 188's destroyed windshield. specifically looking at a circular break that seems to be -- that could be the result of a flying object thrown or shot at the train moments before it crashed on tuesday night at about 9:21 p.m. ntsb investigators say an assistant conductor on board the train recalls hearing a radio conversation moments before the crash between the engineer and a nearby train, a local train's engineer saying they were both hit by an object. >> she said she heard the engineer talking to a septa engineer. she recalled that the septa engineer had reported to the train dispatcher that he had either been hit by a rock or shot at.