U.S. Marines loaded ordnance onto F-35B Lightning II fighter jets during training exercises in the Caribbean on October 4th, 2025, between 2:07 PM and 5:07 PM UTC. The deployment supports U.S. Southern Command (SOUTHCOM) mission objectives and Department of War priorities, as directed by the President. The training involved the loading of ordnance onto the advanced F-35B fighter aircraft, highlighting the lethality and warfighting capabilities of the U.S. Marine Corps. These exercises are part of broader U.S. military operations in the region. The U.S. forces are operating in the Caribbean under the direction of SOUTHCOM and in alignment with the priorities set by the President of the United States, according to information released by SOUTHCOM via their official X account. The Secretary of War and U.S. Marine Corps Forces South (MARFORSOUTH) were also tagged in the post, indicating their involvement or awareness of the operations.