LSE 2025 is an all-of-Navy exercise that will be leverage live, virtual, and constructive (computer-generated) training capabilities to provide a realistic strategic competitor threat scenario. LSE will combine the Sailors, Marines, government civilian and contract employees assigned to dozens of operational and training command staffs into one global exercise environment. Now in its 3rd iteration, LSE will also incorporate Allies and partners. Participating units will include six Navy and Marine Corps component commands and seven U.S. numbered Fleets, including U.S. Fleet Cyber Command/U.S. Tenth Fleet, operating seamlessly across 22 time zones.