Registration is due next week for a set of proposers' days next month that lays out details for an upcoming competition sponsored by the Pentagon's advanced research arm designed to ensure access to an ever-crowded electromagnetic spectrum. In a July 19 special notice posted in Federal Business Opportunities , the Defense Advanced Research Projects Agency calls for interested parties to register for a set of proposers' days on Aug. 10 and 11 as part of the Spectrum Collaboration Challenge. "The...