TOKYO : Japanese startup Terra Drone, which uses drones to survey and inspect energy infrastructure, is stepping up cooperation with Saudi Arabia's state-owned oil company Aramco to inspect oil and gas facilities, Terra Drone told Reuters. The Japanese company has signed a memorandum of understanding with Aramco under which Terra Drone will hold test runs to inspect the oil giant's facilities in Saudi Arabia starting later this year and into next. Actual operation of the inspections is expected