The Marine Corps reduced its fiscal year 2019 budget request for RQ-21 Blackjack unmanned aerial systems from four to zero as a result of an internal manpower shift, according to a service spokesman. The service previously projected it would request four systems in the FY-19 budget request. However, six RQ-21 systems -- which consist of five air vehicles per system -- are scheduled to be delivered between fiscal years 2018 and 2019, which will bring the service to full operational...