The Navy has awarded Boeing a $43 million contract modification to build four Orca Extra Large Unmanned Undersea Vehicle prototypes. "The Orca XLUUV will be modular in construction with the core vehicle providing guidance and control, navigation, autonomy, situational awareness, core communications, power distribution, energy and power, propulsion and maneuvering, and mission sensors," a Feb. 13 Defense Department contract announcement reads. "The Orca XLUUV will have a modular payload bay, with defined interfaces to support current and future payloads for...