It's a bag for in case you have to bug out. For example, if there were an earthquake and the building became unsafe, and we were evacuated; or if there were a flood, and I couldn't get home (I work on the opposite side of the river from my office). If for any reason there is a survivable emergency, I have supplies (food, water, bandages, paper/pens/pencils, extra money both folding and coins, dusk mask, folding emergency blanket, flashlight and batteries, pocket knife, etc.) in a backpack under my desk, easily grabbed on the run.