- January 20, 2021, 6:53 AM This MQ-9A Block 5 carries a 10-tube pneumatic sonobuoy dispenser system developed by GA-ASI for the SeaGuardian. (Photo: GA-ASI) General Atomics Aeronautical Systems Inc. (GA-ASI) has revealed that it has completed the development and testing of a self-contained anti-submarine warfare (ASW) package, the first such equipment for an unmanned aircraft system (UAS). The package comprises podded sonobuoy dispenser systems (SDS) and a sonobuoy management and control system (SMCS). GA-ASI has been studying unmanned ASW capability for some years, demonstrating sonobuoy remote processing capability from an MQ-9A Reaper in 2017. Subsequently an SMCS has been added, and the SDS has been developed. It employs a pneumatic launch system, and each pod can carry up to 10 A-size sonobuoys or 20 G-size buoys.