The Department of Homeland Security secretary said we need to be concerned about rail security, one day after a New Jersey train crashed into Hoboken station.

“We have to be concerned about trains, public transportation, public places, public events,” Secretary Jeh Johnson said on MSNBC’s “Morning Joe” Friday when asked whether trains are a weak spot terrorists or other bad actors could exploit. “TSA itself has been stepping up its rail safety efforts. But their principle focus right now is and should be aviation security. That’s the reason they were created. But they do have this rail safety mission.”