The Tactical High Energy Laser Advanced Concept Technology Demonstrator (THEL ACTD) was designed and built by a Northrop Grumman-led team for the U.S. Army Space & Missile Defense Command and the Israel Ministry of Defence. Now being used as the THEL (THEL) Test Bed, THEL has been proving laser defense system capability since June 2000, when it began shooting down Katyusha rockets singly and in salvos.
