Northrop Grumman rebranded the Swift Engineering KillerBee product line, unveiling the Bat line of small unmanned air systems (UAS). The Bat systems will have wingspans ranging from 6.5 to 33.2 feet. Northrop Grumman recently acquired the KillerBee product line from Swift Engineering. Swift Engineering will continue to work on design refinement, product line development, flight test support and manufacturing. Product development will be managed by Northrop Grumman's Aerospace Systems sector. "The Bat family of small unmanned air systems will be ideally suited to today's irregular warfare environment, offering real-time ISR, communications relay and strike capabilities,'' said Corey Moore, vice president of Advanced Concepts-Air and Land Systems for Northrop Grumman Aerospace Systems.