The Defense Security Cooperation Agency (DSCA) notified Congress Friday of a possible Foreign Military Sale (FMS) to the United Arab Emirates (UAE) of 48 Terminal High Altitude Area Defense (THAAD) missiles and associated parts and equipment for an estimated cost of $1.1 billion, according to a DSCA statement.

In addition to the 48 THAAD missiles, the UAE requests nine THAAD launchers and associated parts, equipment and support.

The deal is contingent on Congress’ approval.

Principal contractors in the deal would be Lockheed Martin [LMT] and Raytheon [RTN].

THAAD is a Missile Defense Agency (MDA) program that provides the Ballistic Missile Defense System (BMDS) with a globally transportable, rapidly deployable capability to intercept and destroy short, medium and intermediate ballistic missiles inside or outside the atmosphere during their final, or terminal, phase of flight.