The Pentagon's advanced research arm plans to hold a proposers' day next week for a program that intends to allow for long-duration source payloads on more affordable undersea platforms. According to the April 25 notice on Federal Business Opportunities , the Defense Advanced Research Projects Agency will hold a classified proposers' day on May 5 for the Tactical Exploitation of the Acoustic Channel (TEAC) program, which seeks to "develop and demonstrate a phased array formed from a semi-autonomous, distributed network...