According to C4ISRNET, the Marine Corps on the Boxer used a new system called MRZR LMADIS (Light Offshore Air Defense Integrated System). The system was installed on a Polaris MRZR vehicle and the US Department of Defense published photos of the vehicle. According to USNI News, this is the first time that the US "new generation of electronic warfare and directed energy weapons have shot down a drone."
The system consists of two vehicles - one is the "command node" and the other is the "sensor node." These vehicles are equipped with radar sensors, cameras, RF detectors and jammers. Once the crew can detect the threat, they use the jammer to destroy the signal from the drone. Although the system has been tested on the ground of ground forces, Military.com reported that the Navy and Marine Corps began testing the system on board earlier this year.
The incident occurred a month after the Iranian military shot down an American spy drone in the same area. In recent years, with the introduction of cheap commercial equipment into the market and the increased investment of foreign military technology, the US military has begun to pay more attention to the threat posed by drones.
As USNI News points out, interference systems are a cost-effective defense. A few years ago, an American allied country launched a $3 million Patriot missile to shoot down a $200 drone - which is considered quite expensive. In this case, the Boxer has a defensive missile system that can be used to shoot down drones or as a 5-inch gun as part of its Phalanx close-range weapon system. Directional energy weapons are less expensive to operate and more efficient.
The US military has conducted many experiments on the use of directed energy weapons for drones and missiles. The US Air Force launched a new system called THOR (Tactical High-Power Microwave Operation Responder) in June to shoot down drones, and the US Army began investing high-power microwave cannons last year to shoot down drones.