AVOs Will Operate Carrier-Based MQ-25 Stingray UAVs Expected To Start Appearing In 2024 The Navy announced a new warrant officer specialty designator whose job will be to operate carrier-based MQ-25 Stingray unmanned aerial vehicles, which are expected to start appearing in fleet carrier air wings sometime in 2024. The establishment of the Aerial Vehicle Operator (AVO) warrant officer specialty became a reality Dec. 9 with Secretary of the Navy Kenneth J. Braithwaite’s approval of the new designator, which was announced in NAVADMIN 315/20. Over the next 6-10 years, the Navy will recruit, train and send to the fleet, a community of roughly 450 warrants in grades W-1 through W-5.