As part of Operation Midnight Hammer, the US used Tomahawk missiles to strike Iran’s nuclear sites. Here are five key facts about the long-range weapon.

The U.S. military helped defend Israel from Iranian-fired missiles Friday, a day after Tel Aviv launched a massive air attack on Iran’s military leadership and nuclear program. A U.S. defense official, who confirmed the news, did not say what American assets were used and how many interceptors were required.