Shots From Mexico at a Coast Guard Boat Near Garceño, Texas — Then Hundreds of U.S. Troops, About 500 by NewsNation’s Count, Pour Into the Rio Grande Valley
A U.S. Coast Guard boat crew patrolling the Rio Grande near Garceño, Texas, came under gunfire from the Mexican side of the river on Saturday, Sept. 26, and fired back, the Coast Guard said. Six days later, U.S. Northern Command confirmed to Newsweek on Oct. 2, 2026, that it is sending hundreds of troops into Texas’ Rio Grande Valley, across from Tamaulipas, under a new mission called Operation Unified Response. NewsNation, which first reported the shooting, put the number at about 500.
What the Coast Guard says happened
According to the Coast Guard statement quoted by NewsNation, Coast Guard Forces Rio Grande personnel “encountered gunfire from the Mexican border” near Garceño while running joint interdiction operations with federal partners, and returned fire. No Coast Guard or other personnel were hurt and no Coast Guard equipment was damaged. The incident remains under investigation.
Breitbart Texas, citing Coast Guard spokesperson Lt. Cmdr. Rachel Ault, reported that the crew was in a small boat and was working alongside federal partners including U.S. Border Patrol. NewsNation described the shooters as suspected cartel members. The Coast Guard’s own statement did not say who fired, and no arrests have been reported.
Operation Unified Response
A Northern Command spokesperson told Newsweek the troops deployed on Friday and will “increase patrol capacity, reinforce key areas, provide additional monitoring and detections capabilities” in support of the Department of Homeland Security and Customs and Border Protection. The spokesperson said it is part of Operation Ardent Vanguard, run by Joint Task Force-Southern Border.
The figures differ by outlet. NewsNation reported about 500 troops and said video it obtained shows soldiers being dropped onto islands in the river from Chinook helicopters. Northern Command told Newsweek only “hundreds.” A Homeland Security source told Breitbart Texas the soldiers came from West Texas border duty and are expected to stay at least 30 days, with the exact size withheld.
Drones over the valley
NewsNation reported that from August to September the military used a high-energy laser in the Rio Grande Valley to bring down at least 11 cartel-linked drones, which officials said threatened troops and CBP personnel. The Border Patrol’s Rio Grande Valley Sector covers more than 320 river miles, 250 coastal miles and 19 counties. For crossing and travel context, see our Reynosa–McAllen safety page.
Sources
- NewsNation, “500 troops deployed to Texas’ Rio Grande Valley after Coast Guard shooting,” Oct. 2, 2026
- Newsweek (Dan Gooding), “Hundreds of US Troops Sent to Mexico Border Amid Alleged Cartel Violence,” Oct. 2, 2026
- Breitbart Texas (Bob Price and Randy Clark), Coast Guard gunfire report, Oct. 2, 2026
- Photos: U.S. Coast Guard, via DVIDS and DVIDS
Reported Oct. 2, 2026, from the outlets above. The Coast Guard has not said who fired or released the number of shots, and the exact troop count has not been officially confirmed.