NATO’s RQ-4D Surveillance Drone Achieves Initial Operational Capability arif2021-02-16T22:46:14+00:00 NATO has declared the Alliance Ground Surveillance (AGS) RQ-4D remotely piloted aircraft initially operationally NATO’s RQ-4D Surveillance Drone Achieves Initial Operational Capabilityarif2021-02-16T22:46:14+00:00