Amtrak investigators inspect the deadly train crash in Chester, Pa., Sunday, April 3 2016. The Amtrak train struck a piece of construction equipment just south of Philadelphia causing a derailment. (Michael Bryant/The Philadelphia Inquirer via AP)  PHIX OUT; TV OUT; MAGS OUT; NEWARK OUT; MANDATORY CREDIT
Amtrak investigators inspect the deadly train crash in Chester, Pa., Sunday, April 3 2016. The Amtrak train struck a piece of construction equipment just south of Philadelphia causing a derailment. (Michael Bryant/The Philadelphia Inquirer via AP) PHIX OUT; TV OUT; MAGS OUT; NEWARK OUT; MANDATORY CREDIT Credit: Michael Bryant — The Philadelphia Inquirer via ap