Israel and the United States are stepping up their close cooperation on developing missile defense systems, Defense News reported on Wednesday.

According to the report, the US is helping to build three Israeli defense systems that intercept airborne threats before they reach their targets: The Arrow-3 for long-range missiles, David’s Sling for medium-range rockets, and the Iron Dome for short-range projectiles.

The report quotes Moshe Patel — the director of the Israeli Defense Ministry’s Israel Missile Defense Organization — outlining the extent of US-Israel cooperation.

“In accordance with congressional mandates and our government-to-government agreements, each one of these [intercepting systems] is being produced at least 50 percent in the United States,” he said.

On the Arrow-3, Israeli company Israel Aerospace Industries is working with Boeing to develop the system that will destroy missiles flying outside the Earth’s stratosphere. “Significant parts of this high-performance missile designed to intercept targets deep into space are being produced in the United States,” Defense Newsquoted IAI Executive Vice-President Boaz Levy as saying. “More than 20 states are involved in the production of Arrow-3.”

The David’s Sling is being developed by Israeli company Rafael and the American company Raytheon. Parts of the system will be sold to Poland as part of the country’s own missile defense network.

Defense News quoted Rafael Executive Vice President Pini Yungman as saying, “This partnership with Raytheon that we’ve been working on and investing in for almost 12 years is becoming real. We’re seeing it start to translate into real contracts and big business. We’ll provide to Raytheon, Raytheon will provide to the U.S. Army and it’s a win-win for all concerned.”

Furthermore, Raytheon and Rafael are working on improving aspects of the Iron Dome. The Defense News  report noted that “about 75 percent of components for the Iron Dome intercepting missile — some 55 percent of the U.S.-funded production budget — is being built in the United States by 27 different American vendors.”

The US has invested heavily in Israeli defense systems, partly to maintain the security of the Jewish state and partly to employ Israeli expertise and technology to strengthen America’s own security infrastructure.