Leonardo DRS's Multi-Mission Hemispheric Radar (MHR) displayed at Eurosatory 2026. (Giles Ebbutt) In counter-unmanned aerial vehicle (C-UAV) operations one size of system does not fit all, and large, exquisite air defence and counter-missile systems are not always a match for UAVs, Leonardo DRS has told Janes . In Israel, Ukraine, and in the Gulf the locations of exquisite systems are often known, and they can be overwhelmed through weight of UAV numbers.