ANNISTON ARMY DEPOT, Ala. -- The depot held its Annual Protection Exercise Sept. 18.

The day began with a simulated cyber attack on the installation's Directorate of Information Management.

"It is always a constant threat to the Department of Defense," Don Evans, the depot's emergency manager, said of the cyber attack.

As that emergency was abated, a mock train derailment occurred at the entrance to the depot's Nichols Industrial Complex.

The incident not only blocked a major artery for ANAD between the east and west sides of the installation, it also released a plume of gas into the air and injured employees in the area.

"This is a culmination of different exercises we do throughout the year," said Evans.

ANAD holds drills, table top exercises and full-scale exercises to ensure the responders and all others who play a direct or support role in an emergency know where they should be and what they should do.

"Our employees want to feel safe," said Evans. "They want to feel if something happens this depot can respond to that and mitigate the situation."

September is often chosen at the time for the full scale exercise because it is designated as National Preparedness Month.