The U.S has hit 41 Humvees since attacks began in August, according to data from United States Central Command.

The U.S. is sending $30,000-bombs to eliminate these armored vehicles, which cost about a quarter of a million dollars each depending what it is equipped with, according to Todd Harrison, a senior fellow at the Center for Strategic and Budgetary Assessments.

The U.S. Defense Department confirmed the targets to CNN. "In some cases, we have seen instances of ISIL capturing and employing U.S.-made equipment," said a spokesperson. "When we've seen these terrorists employing this equipment, we've sought to eliminate that threat."

Once the U.S. destroys the equipment, it might have to re-supply the Iraqi military.

"If we want them [the Iraqi military] to be able to secure their own borders in the long run, we're going to have to re-equip them," said Harrison. "So we'll be buying another Humvee and sending it back to the Iraqi military.''