Armed Drones, AI, and Combat Ships: US Military Tech Trials near Cuba

The United States is conducting tests near Cuban waters with a new wave of military technology that merges artificial intelligence, aerial drones, unmanned maritime vehicles, combat ships, and manned aircraft into a unified operational environment.

The FLEX2026 exercise, occurring from April 24 to April 30 in Key West under the direction of the US Naval Forces Southern Command and the Fourth Fleet, stands out as an innovative hybrid warfare experiment in the Caribbean, rather than a routine military maneuver.

The US Navy characterizes this exercise as an integration of commercial unmanned systems, AI, and traditional naval platforms to showcase a complete "action chain": detecting, targeting, tracking, and intercepting objectives.

In military parlance, this sequence is recognized as the kill chain, though Washington frames it within operations targeting drug trafficking networks and transnational organized crime.

Unmanned Surface Vehicles Take Center Stage

Perhaps most striking is the deployment of unmanned surface vehicles (USVs). Official images depict autonomous vessels operating off Key West, including a Tsunami USV, with military personnel and civilian workers loading ammunition onto these systems.

This detail is vital: these are not merely surveillance drones but maritime platforms with potential offensive or direct interdiction capabilities.

USVs can serve as advanced scouts, patrol wide areas, approach suspicious vessels, and relay real-time information to other assets.

The Role of Aerial Systems in FLEX2026

In the air, FLEX2026 utilizes systems like the Vanilla UAS, a long-endurance drone engineered for extended surveillance missions — lasting hours or even days, according to previous reports.

This type of platform offers a significant advantage: it can sustain continuous observation over vast maritime areas without risking pilots or relying on short operation cycles.

Complementing these drones are manned aircraft like the Beechcraft Super King Air, typically used for surveillance, communication, reconnaissance, or sensor support.

In an exercise like FLEX2026, its likely role is to support the information network: receiving, processing, or retransmitting data generated by drones and naval units.

Traditional Naval Forces and Hybrid Fleet Concepts

The traditional naval component is represented by the USS Wichita (LCS 13), a Freedom-class littoral combat ship. This vessel is designed for rapid operations in coastal waters, interdiction, patrolling, and supporting combined missions.

Its presence alongside autonomous vessels underscores the exercise's core concept: a "hybrid fleet," where manned and unmanned systems operate in concert.

The Fourth Fleet further explained that during FLEX2026, the fleet demonstrated its ability to locate and stop illicit activities at sea. The process begins with unmanned systems identifying a target; the data is then shared in real-time among platforms to fix and follow the vessel; finally, manned assets like helicopters and ships position themselves to support interdiction.

This framework alters the traditional pace of maritime operations. AI accelerates target classification, reduces response times, and coordinates dispersed units over a broad region. The military promise is clear: cover more ocean, expose fewer personnel, and make faster decisions.

Broader Implications and Cuba's Strategic Concerns

While the stated goal is combating drug trafficking, the technological capabilities demonstrated in FLEX2026 have far-reaching applications. A system capable of real-time detection, tracking, and interception of vessels can also be employed in crises, blockades, maritime control, or strategic pressure.

For Cuba, the significance is unmistakable. The exercise takes place in Key West, a short distance from the island's western coast, coinciding with recent flights of MQ-4C Triton drones, intelligence aircraft, and US naval activities in its vicinity.

There's no need to declare a direct operation against Havana to grasp the message: the US is testing a modern, autonomous, scalable military architecture close to Cuba.

FLEX2026 reveals that future warfare no longer hinges solely on large ships or manned aircraft. It relies on networks: sensors, drones, artificial intelligence, civilian contractors, autonomous vessels, and naval units capable of functioning as a cohesive system.

And this network is being tested right now in the Caribbean, surrounding Cuba amidst an unprecedented scenario of pressure from the current US administration toward the Cuban regime.