A video allegedly released by the Venezuelan government to scare US Marines was posted to Facebook.
Small Arms Fire Detection System - AMMS
Vehicle Based Acoustic Multi-Mission Sensor (V-AMMS) is a gunshot detection and localisation system, based on the worldwide unique and extremely small Acoustic Vector Sensor (AVS) technology developed by Microflown AVISA. V-AMMS is installed on vehicles and provides the crew with a true 360° situational awareness. It locates fire positions and displays the direction and distance to the hostile shooters on an easy to use ruggedised tablet. The V-AMMS technology is based on measuring the directional acoustic particle velocity. This unique technology allows outstanding results on directional accuracy of 1.5 degrees. This combined with its low SWaP characteristics makes it a valuable addition to any intended or existing sensor suite on board of the manned or unmanned vehicle.