The REX MK II is an unmanned land vehicle adapted to a range of ground missions with advanced maneuverability and autonomous with command-and-control capabilities.
The US report found that two drones actually attacked the Merce Street ship on July 29.
An investigation led by the US Central Command has concluded that Iran was responsible for the attack on the Mercer Street which left two crew members dead; British and Israeli experts concur.
The Iran-backed drone war is now threatening, or has involved Syria, Iraq, Israel, Yemen and other states in the region.
Iran has pioneered drones by copying US drones, such as the Predator or Sentinel. It has also copied other drone models it has seen around the world.
"These new capabilities provide the political echelon and defense establishment with the operational flexibility that is critical to our national security."
Army assures nothing to see here, and not concerned by third incident in 3 days
The MK II is the most advanced model in the Heron line, can reach an altitude of 35,000 feet, a max speed of 140 knots and a max flight time of 45 hours.
Tehran is very openly bragging about its UAV capabilities and regularly lists its arsenal.
The course was completed by 25 trainees, including five women.