All the hysteria over 450 MILLION rounds being purchased by DHS is just that - hysteria.
You need to do a bit of basic math. How many people under the umbrella of DHS are authorized to carry a handgun? (We are presuming all 450M rounds are for handguns, aren't we?) How often to each of those individuals qualify with their handgun? How many rounds are fired during each qualification episode?
After you crunch those numbers, please calculate how many rounds are left over for practice. How many times a year are each of the DHS employees required to practice? How many rounds are fired during each practice episode?
Now, between mandatory qualification and manditory practice, how many rounds are left over for shooting BGs, innocent bystanders, those who happen to be in the wrong house when a no-knock warrant is served, and the dogs and cats that happen to be at any place a warrant is served?
Of course, instead of either doing all the research necessary to answer those questions, or moan and groan about how difficult it would be, anyone really interested could Google up research already conducted and answers already arrived at.
I am purposely NOT going to post any links because IMHO the only way to defuse hysteria is to make the hystericval person confront the issue and decide if rational consideration will still support those feelings of doom, gloom, and the-sky-is-falling.
stay safe.