A CNN employee traveling by air recently discovered sensitive government documents — detailing how the Department of Homeland Security would respond to a bioterrorism attack coinciding with the Super Bowl — that apparently had been left behind in an airplane seat back pocket, the network reported Monday.

The draft reports outlined ways the department could improve after there had been confusion in recent drills simulating anthrax attacks on Super Bowl Sunday, according to CNN. The reports also came with instructions to keep the documents locked or to shred them when done, the network said. Continue reading.