DOW Support to the Southern Border

Marine Corps Lance Cpls. Samuel Sosa, left, and Sebastian Robles, assigned to Joint Task Force Southern Border, operate a boom lift to replace concertina wire during barrier reinforcement operations in Nogales, Ariz., May 15, 2026. U.S. Northern Command is working side-by-side with the Department of Homeland Security and the U.S. Customs and Border Protection to provide unique military capabilities to protect the territorial integrity of the U.S. southern border.

Marine Corps Lance Cpls. Allen Tomb, left, and Dylan Lindsey, assigned to Joint Task Force Southern Border, weld prefabricated brackets onto the southern barrier during reinforcement operations in Naco, Ariz., May 20, 2026. U.S. Northern Command is working side-by-side with the Department of Homeland Security and the U.S. Customs and Border Protection to provide unique military capabilities to protect the territorial integrity of the U.S. southern border.

Marines assigned to Joint Task Force Southern Border extend concertina wire for barrier reinforcement operations in Naco, Ariz., May 20, 2026. U.S. Northern Command is working side-by-side with the Department of Homeland Security and the U.S. Customs and Border Protection to provide unique military capabilities to protect the territorial integrity of the U.S. southern border.

Marine Corps Lance Cpl. Luke Smith, assigned to Joint Task Force Southern Border, provides security along the southern barrier as part of barrier reinforcement operations in Nogales, Ariz., May 15, 2026. U.S. Northern Command is working side-by-side with the Department of Homeland Security and the U.S. Customs and Border Protection to provide unique military capabilities to protect the territorial integrity of the U.S. southern border.

Marines assigned to Joint Task Force Southern Border stand in a line to board a UH-60 Black Hawk during a simulated casualty evacuation exercise near San Ysidro, Calif., May 20, 2026. U.S. Northern Command is working side-by-side with the Department of Homeland Security and U.S. Customs and Border Protection within narrowly defined authorities to provide unique military capabilities to protect the territorial integrity of the U.S. southern border.

Marine Corps Lance Cpls. Rey Gonzalez, left, and Terence Hall, assigned to Joint Task Force Southern Border, patrol along the U.S.-Mexico border near El Centro, Calif., May 21, 2026. U.S. Northern Command is working side-by-side with the Department of Homeland Security and the U.S. Customs and Border Protection within narrowly defined authorities to provide unique military capabilities to protect the territorial integrity of the U.S. southern border.

Marine Corps Lance Cpl. Carter Gil, assigned to Joint Task Force Southern Border, launches a Skydio X10 small unmanned aerial system to maintain situational awareness along the U.S.-Mexico border near El Centro, Calif., May 21, 2026.

The Brazilian navy attack submarine BNS Humaita and frigate Defensora and the U.S. Navy guided-missile destroyer USS Gridley steam in formation alongside the aircraft carrier USS Nimitz during a bilateral maritime engagement in the Atlantic Ocean, May 13, 2026. The Nimitz is deployed as part of Southern Seas 2026, which seeks to strengthen maritime partnerships with countries throughout the region.

Army Spc. Kincaide Bunfill, assigned to Joint Task Force Southern Border, uses binoculars to monitor the barrier near Bisbee, Ariz., as part of Operation Strike Kraken, May 7, 2026. Monitoring cartel scout sites, maintaining a ready posture to defeat enemy drones and ensuring shared communications with U.S. Customs and Border Protection are the operation's key tasks.

A sailor fires a shot line from the USS Gridley to the USNS Patuxent during a replenishment as part of Southern Seas in the Atlantic Ocean, May 1, 2026. The exercise was designed to enhance capability, improve interoperability and strengthen maritime partnerships with countries throughout the region.

Marines assigned to Joint Task Force Southern Border install triple-strand concertina wire using boom lifts during barrier reinforcement operations in Douglas, Ariz., April 17, 2026. U.S. Northern Command is working with the Department of Homeland Security and the U.S. Customs and Border Protection within narrowly defined authorities to provide unique military capabilities to protect the territorial integrity of the U.S. southern border.

Marine Corps Lance Cpl. Avery Lindberg, left, and Cpl. Sergio Garcia, both combat engineers assigned to Joint Task Force Southern Border, position triple-strand concertina wire from a boom lift during barrier reinforcement operations in Douglas, Ariz., April 17, 2026.

Marine Corps Lance Cpl. Christian Koch, a combat engineer assigned to Joint Task Force Southern Border, uses a tie gun to secure triple-strand concertina wire during barrier reinforcement operations in Douglas, Ariz., Friday, April 17, 2026.

A Navy MH-60S Sea Hawk transports stores to the USS Nimitz during a vertical replenishment in the Pacific Ocean, April 23, 2026. The ship is deployed as part of Southern Seas, an exercise designed to enhance capability, improve interoperability and strengthen maritime partnerships with countries throughout the region.

Marine Corps Pfc. Conner Kammerer, left, and Lance Cpl. Noah Hardon, assigned to Joint Task Force Southern Border, depressurize a fuel gravity flow nozzle to ensure safe equipment storage after refueling 5-gallon jerry cans for barrier reinforcement operations along the southern border in Douglas, Ariz., April 20, 2026.

Army Chief Warrant Officer 2 Viadoy Nicolas conducts preflight inspections on a CH-47F Chinook helicopter at Libby Army Airfield, Fort Huachuca, Ariz., April 16, 2026. Nicolas is assigned to Joint Task Force-Southern Border, which provides unique military capabilities to protect the territorial integrity of the U.S. southern border.

Sailors welcome Chilean government and military delegation members aboard the USS Nimitz during a distinguished visitor tour in the Pacific Ocean, April 16, 2026. The ship is deployed as part of Southern Seas, an exercise designed to enhance capability, improve interoperability and strengthen maritime partnerships with countries throughout the region.

A Navy E/A-18G Growler taxis on the flight deck of the USS Nimitz in the Pacific Ocean, April 13, 2026. The ship is deployed as part of Southern Seas, an exercise designed to enhance capability, improve interoperability and strengthen maritime partnerships with countries throughout the region.

Army Sgt. Jimmy McCain, a 114th Aviation Regiment soldier assigned to Joint Task Force Southern Border, aims the Wingman and Pitbull counter-small unmanned aerial system toward a drone during a joint training exercise at Fort Bliss, Texas, April 9, 2026.

A sailor guides an E/A-18G Growler assigned to the "Cougars" of Electronic Attack Squadron 139 onto a catapult on the flight deck of the USS Nimitz in the Pacific Ocean, April 8, 2026. The Nimitz is deployed as part of the Southern Seas 2026 exercise, which seeks to enhance capability and strengthen maritime partnerships in the Caribbean and Central and South America.