I finally went through and transferred almdoc's map to Google, so if anyone wants the full system for their map, click the link below. I wasn't able to pinpoint every siren (damn thick foliage), so I left those with a question mark in the approximate location according to almdoc's map. If anyone is able to find any of those missing sirens, let me know.
https://www.google.com/maps/d/edit?mid= ... sp=sharing