# US maritime and aerial surveillance in the Gulf of Mexico > Live situation record from CLSTR: https://clstr.news/situations/us-maritime-and-aerial-surveillance-in-the-gulf-of-mexico > Updated: 2026-09-21T23:11:29.000Z. Sources: 3. Developments: 2. The United States has increased its maritime and aerial surveillance presence in the Gulf of Mexico and near the Yucatán Peninsula. The U.S. Department of War announced the deployment of a seven-ship fleet, including the USS St. Louis, to combat drug trafficking, piracy, and narcoterrorism. Simultaneously, the Mexican maritime intelligence firm Ehrlich Maritime Security (EMS) has documented an increase in intelligence, surveillance, and reconnaissance (ISR) flights involving P-8 Poseidon aircraft and MQ-4C Triton drones. EMS characterizes these flight patterns over the coasts of Yucatán, Campeche, Tabasco, and Veracruz as “unusual” and “anomalous,” noting they do not align with primary drug trafficking routes. The firm suggests these missions may be intended to monitor cargo ships and tankers potentially transporting Mexican oil to Cuba in an attempt to circumvent a U.S. oil blockade. Neither Mexican nor U.S. authorities have officially confirmed the specific objectives of these surveillance activities. ## Timeline ### 2026-09-21: United States increases aerial surveillance near Yucatán Peninsula U.S. aerial surveillance has increased near the Yucatán Peninsula, potentially to monitor Mexican oil shipments to Cuba and bypass Washington's oil blockade, according to maritime intelligence reports. 2 sources. https://clstr.news/cluster/united-states-increases-aerial-surveillance-near-yucatn-peninsula ### 2026-09-15: United States intensifies maritime surveillance in the Gulf of Mexico The U.S. is intensifying maritime operations in the Gulf of Mexico, deploying the USS St. Louis for anti-drug missions while conducting unusual surveillance flights near Mexican coasts. 2 sources. https://clstr.news/cluster/united-states-intensifies-maritime-surveillance-in-the-gulf-of-mexico --- Cite as: US maritime and aerial surveillance in the Gulf of Mexico. CLSTR, https://clstr.news/situations/us-maritime-and-aerial-surveillance-in-the-gulf-of-mexico