Starfleet Perimeter Defense Network

The Starfleet Perimeter Defense Network was a defensive sensor grid for Starfleet.

By 2379, the Xarantine Stellar Array and the Poloma III Observatory were part of the Defense Network. Both USS Enterprise (NCC-1701-E) officer Data and Section 31 used the Defense Network to verify the route of the freighter Caedera and the freighters that it transferred contraband cargo to headed for Tezwa.