US Fish and Wildlife Repeater System?

I spent the afternoon doing some searches on various bands and found what sounds like a US Fish and Wildlife P25 VHF linked repeater system. There were mentions of a Skidaway site (near Savannah), a Blackbeard site (Blackbeard Island National Wildlife Refuge), and a Eulonia site (McIntosh County near Blackbeard Island NWR).

169.825
171.650
172.450 - Skidaway Site? (very strong in Savannah)
172.650

I am fairly certain that none of the above frequencies are repeater inputs. All stations heard on the frequencies were of equal signal quality/strength. The same traffic was multicast on all 4 frequencies. 172.450 was very strong here in Savannah and should be the Skidaway site mentioned above. The other three were practically equal in signal strength, so it is difficult to tell where they might be. Apparently it is a new system, conversations I monitored indicated that the system is not fully functional yet.

Mac McCormick, KF4LMT
kf4lmt@comcast.net