The 47-second, black-and-white video begins with an overhead shot of the building in Mosul, an ISIS stronghold.

The Defense Department has released a video showing the U.S. bombing of an ISIS cash stockpile in Mosul, Iraq, on Monday.

The 47-second, black-and-white video begins with an overhead shot of the building in Mosul, which is the militants’ main stronghold in Iraq. The facility is then hit with two 2,000-pound (907-kilogram) bombs.

Clouds of paper the Pentagon says is money are seen floating above the bombing site after the airstrikes.

U.S. officials say that millions of dollars were destroyed, but the exact amount is unknown.

It’s at least the second time the U.S. has bombed ISIS’s cash stockpiles. Combined with attacking the militants’ oil resources, it is part of an effort to sap their financial strength.

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