On August 7, 2020, the FEST deployed from Andrews Air Force Base to Beirut, Lebanon, to lend support to the U.S. Embassy in Beirut as part of the U.S. government’s response following what was later discovered to be an ammonium nitrate fire which caused one of the largest artificial non-nuclear explosions in human history in the city's port. The blast on August 4 had ripped through the port of Beirut, causing extensive injuries and damage throughout the surrounding area. Shortly after the blast, the U.S. Embassy in Beirut requested support from the DSS-led FEST to help coordinate interagency support for emergency response, restoration of essential services, and public health and safety protection.