The AR4 Light Ray is a fixed-wing mini unmanned aerial system developed by a Portuguese company to conduct short-range intelligence, surveillance, target acquisition, and reconnaissance missions. It can be quickly deployed and remotely controlled by a two-person team from a mobile ground control station to provide infantry units with increased situational awareness during day or night operations. The AR4 Light Ray has a maximum flight time of two hours, can carry a 2kg payload, and transmits sensor data to frontline units in real time.