Enlarge / A Boeing MQ-25 demonstrator during deck-handling is an unmanned combat aircraft system designed to provide refueling capability to extend the combatBoeing’s MQ-25 unmanned aerial refueler, known as T1, is currently being tested at Boeing’s St. Louis site. T1 has completed engine runs and deck handling demonstrations designed to prove the agility and ability of the aircraft to move around within the tight confines of a carrier deck.