KDDI:’Water-air combination drone’ Remote underwater inspection: Video transmission, sound wave positioning
US Navy: Succeeded in aerial refueling with drone: Boeing MQ-25
JAXA: Mars exploration drone: 1km flight / 1 time
DoCoMo, KDDI, Softbank: Base station inspection with drone
JFE: It is okay to drop from an altitude of 150m: High-pressure container for drones