Lockheed Martin Corp was awarded a $932 million Pentagon contract for THAAD interceptor missiles, some of which are slated to be delivered to the Kingdom of Saudi Arabia, Reuters reported.

The new contract was a modification to a previously awarded agreement to produce the Terminal High Altitude Area Defense (THAAD) interceptor for Saudi Arabia, the Pentagon said.

Saudi and U.S. officials signed letters of offer and acceptance formalizing terms for Saudi Arabia’s purchase of 44 THAAD launchers, missiles and related equipment in November 2018.

Lockheed Martin, the biggest U.S. arms maker, builds and integrates the THAAD system, which is designed to shoot down short-, medium- and intermediate-range ballistic missiles. Raytheon, another U.S. firm, builds its advanced radar.

Headquartered in Bethesda, Maryland, Lockheed Martin is a global security and aerospace company that employs approximately 105,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services.