The Air Force Research Laboratory, Munitions Directorate, Weapon Dynamics, Guidance, Navigation & Control Branch (AFRL/RWWN), is seeking proposals to mature a collaborative relative navigation concept for distributed vehicles. This low-bandwidth whole-navigation method has been demonstrated in both software and hardware, enabling GPS-denied/degraded vehicles to cooperatively share information to improve localization accuracy. AFRL/RWWN’s goal for this effort is to mature and demonstrate the relative navigation concept using mature software and tactically relevant hardware through a series of increasingly complex flight tests.