Just ask jnevis, he always has a "reasonable" explanation for what the government is doing. I wonder why?
I'll be more than happy to answer that... Simply put, they are required to by law.
That amount is not what DHS says they need to have, it's what Congress says they have to have on hand. Now for SHOW, they want to amend the requirement so they can look good at "Stopping DHS's excess" before an election. Works for both sides of the aisle.
How much ammo do YOU have stockpiled? Probably more than a years worth, I did until recently. Do they need two years, probably depends on how its allocated. Unlike civilian ammo though, by regulation they are required to surplus any ammo that is more than five years old. Why, not really sure, we usually tried to shoot it and not have any "extra." A unit, whether military or otherwise, is required to have a certain allocation on hand at all times, plus what they are required for training and duty use. Any extra in the training allocation must be used before the end of the year, while the duty ammo becomes training, and the "ready" allocation becomes training. It's more bean counting than anything else. This pot to this pot, and so on. The bulk of the stocks are not kept at individual units/locations. The Navy for example houses all small arms ammo in Crane IN, and sends a quarterly shipment to a base that in turn divides it to the units it supports.
I also work on gov't projects, including a LOT of procurement. The other reason I know how this works is that while on Active duty I assisted with weapon and ammunition management. Now I'm on the budget/contracting side so I see how the process works and the hundreds of pages of contracting law that goes into how any organization, military or civilian, is required to do business with the Feds.
Even before BHO became President, there was always more shotgun than anything else especially here where I'm at, or any of the places I shoot at. The only 223 I could find reliably was the Russian stuff. 9 wasn't any easier either. Part of it may be location, I was in the FL panhandle. SoCal and here before.
As far as the article...It has been a trend in LE training over the last couple years to start doing more force-on-force and airsoft is MUCH cheaper and easier to maintain than Simunition. It has nothing to do with the cost of other training. Having more ammo than the Army is a bit misleading too. If you included ALL of the ammo the Army ordered and used, not training allocations I'd bet the number would be much closer. Also DHS has to provide ammo to all of the classes it offers to outside agencies which wouldn't be included in the 70K personnel llisted, although the ammo is still part of DHS's allocation, again changing the ratio.
BTW Tom- I'm NOT a Govt employee. My paycheck and bennies come from the private sector.