I think they would unleash the hounds of hell to get them back.
I wouldn't want to even speculate at the methods they would use to find out who you are...and extract the keys from your sorry ass.
I would be very very afraid if I was the one who hacked those coins...there is no place on earth safe enough to protect someone who stole that amount of money from the USG.
Only civilian contractors are allowed to steal from the US government.
http://truth-out.org/archive/component/k2/item/93261:solution-the-pentagon-continues-to-overpay-for-everything-lets-fix-it$436 hammer, the $600 toilet seat and $7,622 coffee brewer