FBI to Examine 'particular Damage' to Windshield

National Transportation Safety Board member Robert Sumwalt said Friday that one of three conductors aboard the Amtrak train that derailed in Philadelphia this week told investigators she heard the locomotive's engineer say the train had been struck by an object. The assistant conductor said she overheard radio transmissions made Tuesday by Amtrak engineer Brandon Bostian and the engineer of a Southeastern Pennsylvania Transportation Authority train. Sumwalt said there is "particular damage" to the lower portion of the windshield that the FBI will examine. He described it as a "circular pattern that emanates out just a bit." Bostian was interviewed Friday afternoon for the first time since the derailment of Amtrak Northeast Regional Train 188. Eight people were killed and more than 200 were injured.