Metro-North employees work at the site of Friday’s train derailment in Bridgeport. Conn. on Sunday, May 19, 2013. Crews will spend days rebuilding 2,000 feet of track, overhead wires and signals following the collision between two trains Friday evening that injured 72 people, Metro-North President Howard Permut said Sunday. (AP Photo/The Connecticut Post, Brian A. Pounds )

Read: Train Collision Disrupts Service

A derailed Metro-North rail car is hoisted back on to the tracks in Bridgeport. (AP Photo/The Connecticut Post, Brian A. Pounds )