President Donald Trump signaled earlier Wednesday that military action was imminent, telling reporters that Iran should expect a forceful response.

“We’re going to be hitting them very hard because it’s our turn to hit them,” Trump said in the Oval Office. “They know it’s coming.”

According to CENTCOM, Iran’s Islamic Revolutionary Guard Corps launched multiple ballistic missiles Tuesday in what the U.S. described as an attempted “surprise attack.” All of the missiles were intercepted, and no casualties were immediately reported.