Memory Alpha
Memory Alpha
Personnel assignment log, Paradise lost 1

The personnel assignment log

Personnel assignment log, Paradise lost 2

The personnel assignment log

Planetary Defense Systems was one of the divisions of Starfleet.

B. Moore, M. Carriere, L. Miev, I. Egan, Z. Ferro, B. Osborn, and others were assigned to Planetary Defense Systems in 2372, serving under Admiral Leyton. (DS9: "Paradise Lost")