paid for by abc, inc. from abc news, this is "world news now." >> and hello to you on this thursday morning. i'm t.j. holmes. >> i'm marci gonzales. reena ninan is on assignment. we begin with the focus on speed as investigators try to get to the bottom of that deadly amtrak crash in philadelphia. >> we now know the speed of that train. it was going over 100 miles an hour. thing is, it was in a 50-mile-an-hour zone at the time. that's when all seven cars jumped the tracks. now the engineer says he doesn't remember a thing about the crash. we get the very latest now from abc's david wright. >> this is what's left of northeast regional amtrak 188, seven cars tangled on the tracks killing at least seven people, injuring hundreds more. we learned the name of the engineer, 32-year-old brandon bastion of queens, new york, an amtrak engineer for the past five years. police and federal investigators are already questioning him.