Personnel from the U.S. Coast Guard were involved in a gunfire exchange with individuals located on the Mexican side of the international border. This incident, which the U.S. military later cited as an example of escalating illicit activities, occurred as hundreds of American troops and their equipment were redeployed to Texas' Rio Grande Valley, coinciding with the deployment of 500 Mexican Army and National Guard personnel to their side of the frontier.
The confrontation took place on September 26 while federal agencies were conducting joint operations near Garceno, a small community situated along the border in Starr County, Texas. Coast Guard personnel, engaged in intercepting migrants crossing the Rio Grande River as part of collaborative efforts with other federal bodies, encountered initial gunshots fired from the Mexican territory. In response, Coast Guard members returned fire, according to officials who released details on Friday.
The Coast Guard has initiated an investigation into the event, working in conjunction with federal partners. The source of the initial shots remains undetermined. Fortunately, the Coast Guard confirmed that "No injuries to Coast Guard or other personnel were reported, and no damage to Coast Guard assets or equipment was reported."
Bilateral Efforts to Secure the Border
Ambassador Ronald Johnson, the U.S. envoy to Mexico, stated that the embassy "is helping to coordinate with Mexican forces that are being deployed in the border area where shots were fired against elements of the United States Coast Guard." He further noted that "Mexican military commanders will communicate directly with the U.S. forces deployed. Together, we intend to patrol both sides of our shared border, protect our communities, and disrupt the operations of criminal and terrorist organizations. Any threat from criminal or terrorist elements on either side of the border will be addressed swiftly," emphasized Ambassador Johnson.
Increased Troop Deployments and Operations
In October 2025, the Coast Guard launched "Operation River Wall," an initiative that involves deploying additional personnel, vessels, and other resources to patrol the Rio Grande River along the U.S.-Mexico border. The Coast Guard specified that its operations would concentrate on approximately 260 miles of the river.
This operation entails close collaboration with U.S. Customs and Border Protection, the Department of Defense, and the Texas Military Department. The stated objective is "to secure the border, disrupt illicit activity and protect the American people," as conveyed by the Coast Guard. They affirmed their commitment to "continue to leverage a layered, integrated approach to control, secure and defend the border that strengthens our collective ability to counter illicit activity and safeguard our personnel and the communities we serve."
The U.S. military confirmed on Friday the deployment of hundreds of troops and their associated equipment to the Rio Grande Valley. This deployment is described as a component of pre-planned measures designed to address "historically observed seasonal increases in attempted illegal activity." The Joint Task Force-Southern Border issued a statement indicating that "The Sept. 26 Coast Guard encounter is an example of this uptick in illegal activity."
