Yeah... training.

All Wal-Marts are FEMA outpost's.

FEMA outranks National Guard and Armed Services.

We are and Have been in a Federal State Emergency since 1933...(which means FEMA is ultimately in a position of power that few know about.)

The Decontamination training exercises are for the up coming Radiation disaster that is about to become a major factor for the world.

So... yes... Training.