Northrop’s colossal Manta Ray underwater drone passes at-sea tests – C4ISRNET
기사내용보기 >> Northrop’s colossal Manta Ray underwater drone passes at-sea tests C4ISRNETGiant military manta ray drone passes first ocean test Defense OnePictured: US tests futuristic new Manta Ray underwater drone The Telegraph [드론 관련 기사 보기]