Biosecurity

Sensitive Department of Homeland Security documents detailing how they would respond to an anthrax attack at the Super Bowl are left in a plane's seat-back pocket

Department of Homeland Security anti-terrorism response plans for the Super Bowl have been found left behind on an airplane.

A CNN employee found the December 2017 after-action review of a simulated anthrax attack in Minneapolis, marked 'For Official Use Only', in the seat-back pocket of a commercial airplane.

Due to the risk of a terrorist attack, the DHS gave the Super Bowl a Level 1 'special event assessment rating', the highest security designation available.

The DHS report, though not classified, was marked 'important for national security' and instructed recipients to keep it locked up after business hours and shred it before discarding. 

The document's most sensitive contents are being withheld, and the report on finding it was was delayed until after the Super Bowl due to security concerns.