I wouldn't worry about this. This is a 5-year order. They have 200k employees. 40 cal is the standard carry caliber, most being glocks then sig and H&K. That's 1000 rounds per employee over 5 years. Considering they carry 50+ round and do get free unlmited range ammo, I'm guessing some of those guys burn thru 1000 or 2000 rounds in a day like its nothing.
if it was 200 mil rounds of 223, i'd be like "WTF". but they carry and range practice this caliber (hopefully they use cheaper ammo for practice, but it wouldn't surprise me). You don't want to go to battle with a 40 cal... you use that to make it to your long arm lol...
This seems like normal ordering for the next 5 years, buying in bulk.