sentences:  This was particularly true between requirements developers at the former Air Force Command and Control Intelligence, Surveillance, Reconnaissance Center at Langley AFB, Virginia and their acquisition partners at the Electronic Systems Center (ESC) at Hanscom AFB, Massachusetts, part of Air Force Materiel Command.BACN divides military planners and acquisition bureaucrats on two main fronts.First, how will an "Airborne Network" evolve beyond the existing tactical data links on today's platforms.