Like all weapons handed to “allies in the War on Terror” they generally fall into the wrong hands. The US has made a terrible habit of arming the wrong side. They either try to pick the winner of a conflict and that side ends up getting their ass kicked or they pick the lesser of two evils that are eventually bad guys in the end. 

Islamic State militants have not only stolen a majority of the military Humvees provided to the Iraq Security Forces (ISF) by the U.S., they are now re-purposing them into car bombs.

Iraqi Prime Minister Haider al-Abadi confirmed that 2,300 are in ISIS hands, more than 2/3 of all Humvees provided to Iraq by the U.S. Most were stolen after the terrorist group captured the Iraqi city of Mosul in June 2014. here

 What a waste.