very much. a memorial service for the eight people killed in tuesday's derailment of an amtrak train. kris van cleave has more on the investigation. >> laura fenamor. >> reporter: as federal and state officials gathered sunday near the site of the deadly amtrak derailment to remember the lives lost, the investigation into the cause and the possible projectile damage to the windshield continues. the n.t.s.b. says investigators increasingly believe the train was not shot at. >> i would like to downplay that part. i have seen the fracture pattern am it looks like something about the size of a grapefruit, if you will. and it did not even penetrate the entire windshield. >> reporter: the accident killed eight and injured about 200. >> i just want to get out of the hospital. >> reporter: lenny nobbs, a first time amtrak traveler suffered a fractured back, knee and ribs. he's seen here pinned in the third car. >> it was chaos. there was no other word for it. the first thing i thought about is just surviving.