I apologize for not answering sooner. I don't spend as much time as I would like on this Message Board.
PMS 485 includes a multitude of programs including fixed, mobile and deployable. The following is a quote from the linked website.
"Maritime Surveillance Systems Program Office (PMS 485) - Provides a long-life fixed, and on demand, mobile maritime surveillance capability in littoral regions and open ocean areas of national interest in support of Joint and naval Task Force Commanders."
