We
’ve already shown Boeing’s concept in DARPA’s Vulture 
high-altitude, extremely long-endurance unmanned aerial vehicle program. Now its two competitors, Aurora Flight Sciences and Lockheed Martin, have released artist renderings of their own designs. Aurora calls its concept Odysseus. Lockheed Martin’s aircraft is equally intriguing. All three companies won Phase 1 contracts earlier this month to commence with the design and development of their respective aircraft. DARPA wants an unmanned system that is “able to fly on station and perform its mission for five years without interruption.”
The Air Force has finished modifying and testing the new VC-25B Bridge aircraft that will serve as a temporary Air Force One, the service announced May 1. All that’s left now is to finish painting the jet before it starts flying this summer.