Like it was said before that is 90 million rounds of one caliber, 40 S&W.
So that many Federal Law enforcement agencies, USCG is military BTW, doesn't alarm you? I can see 20,000 Boarder Patrol agents needing training (too few by half if you ask me), 42,000 in the Coast Guard (+30,000 reservist), 4,500 Secret Service Agents, and 20,000 ICE agents needing to train and qualify. That is a total of 116,500 agents.
90,000,000 rounds a year at $.50 a round (quality ammo in bulk)=$45,000,000? Its our money and its funny the one place other than wealth transfer they are willing to spend it is on ammunition for Federal Law Enforcement.
However DHS also has under its umbrella: TSA (few are LEO) and FEMA (uh... ya).
Just for some perspective according to Ammunition quarterly (
http://www.marcorsyscom.usmc.mil/am/ammunition/Corporate_Center/Ammunition_Quarterly/Vol10No3.pdf) The Marine Corps (127,000 active duty,30,000 Reserve and 5,000 Fleet Reserve) spent $146,000,000 in 2002; $417,000,000 in 2003 ;$237,000,000 in 2004; $245,000,000 in 2005. Which includes 12-12.5 million rounds of 7.62 @ a cost of $6 to 9,000,000 per year. How about 5.56, the entire Marine Corps shoots 70 million in training annually, yes ANNUALLY. So if you combine both 7.62 AND 5.56 the Marines shoot less than the DHS departments...

It would appear that DHS is equipping its own military.