The video promotes a new issue of the terrorist group's magazine that includes instructions on derailing trains.Photo – tsa.gov
The Transportation Security Administration (TSA) late last week reminded transit agencies and railroads about ways to protect their systems from terrorist attacks.
The TSA's message followed the release of a recent video from terrorist group Al-Qaeda that focused on threats to U.S. rail systems by homegrown violent extremists, TSA officials said in an emailed statement.