The army is a bit slow
Last yr my friend re-enlisted in the Army, part of his re-enlistment invovled a $15,000 bonus check.
Well the Army messed up and actually sent him $150,000. He noticed this mistake, smiled and figured the Army would be coming back for the $135,000.
So he found a CD invested the $150,000 and it took the Army 12 months to notice they over paid him by $135,000 his YTD Pay was right around $200,000 that's quite alot for an E-6 :)
A few weeks ago his Commander called him in and questioned about him about it, he said indeed the Army had over paid him by $135,000 when his commander asked why he didn't tell anyone he went "If the Army gave you $135,000 would you tell them?" commander smiled asked if he still had the money he of course was smart and knew he'd eventually have to pay it back. So he said yes, and send the $135,000 back.
Smart guy :) Had he spent it'd be screwed ATM.