New Agency Dispatching On RWC?

I have been hearing an agency dispatching off of the RWC White Tanks site, TG 4505 (supposed to be O12 Interop). It may be an Indian reservation....they were working a search in the desert last night using the Phoenix firebird for assistance, and I have heard calls to Sacaton, and for addresses in that region. The weird part is, most calls are in spots that put South Mountain directly between that area and the White Tanks....so why in the heck would this agency be using the White Tanks site?

Though I obviously heard some interop....I'm hearing regular calls go out on this TG as well, clearly not interop stuff.

Also, does anyone know who this could be?

It's Gila River. Check the database. It was just updated to reflect that info.

There have also been 2 other threads discussing talkgroups, 4505, 4509 and other Ocean Deck talkgroups that Gila River is using currently.

http://forums.radioreference.com/arizona-radio-discussion-forum/336805-traffic-o-deck-interop.html

http://forums.radioreference.com/arizona-radio-discussion-forum/331474-gila-river-new-system.html

Thanks, and sorry for duping....I looked and saw 7000 numbers for TGs. I'll remember to thread search next time.

That said, I still don't know why they would use the White Tanks site....South Mountain makes sense, but White Tanks? Also...cool that they don't seem to be doing any encryption yet (I'm sure that's coming soon).