July 1, 2015 6:21 pm NTSB Says ‘Positive Train Control' Could Have Prevented Derailment The National Train Safety Board said that “Positive Train Control” could have prevented the deadly AMTRAK derailment in Port Richmond. US & World Videos 1:30 Protests calling for ceasefire continue at Penn 6:33 Family affair: Former Eagle and new Eagle Jeremiah Trotter and Jeremiah Trotter Jr. speak out 0:20 Teen girl shot in Southwest Philly, suspect in custody 0:27 FBI inspects American Airlines plane at PHL after bomb threat 1:40 Penn officials urging pro-Palestinian protesters to pack up and leave campus