John,
I just did a search too and wow, can't seem to find any references to WARICS except via RR too ...
There was a system News Update Posted on 2006-02-15 08:54:43. It does seem to be "official" ...
"The Yuma Regional Communications TRS, is currently undergoing a significant transformation at the request of the Arizona State Office of Homeland Security and Emergency Management, to cover a larger part of the state. That being said, federal, state, county and local agencies will use this system for interstate interoperability purposes to connect with the San Diego RCS. This move will ensure cross-border interoperability voice communications between the U.S. and Mexico from San Diego eastward through Arizona.
The Western Arizona Regional Interoperability Communications System, (WARICS) will include La Paz and Mohave counties across the western part of the state, which both plan to join this system in the future. Moreover, talks are currently underway between the Las Vegas Metro Police Dept, and Mohave County to have common, mutual aid talkgroups linked between their new 700 MHz TRS, that is currently under construction and this system. This move would greatly enhance interoperability communications between the Las Vegas Metro area, Clark County and the state of Arizona
WARICS will be linked via digital microwave to four other regions across the Grand Canyon State, including the Phoenix Metro area. Further plans call for the addition of mobile data technology that will place MDCs in all first responder vehicles within the next several years or sooner, if funding can be secured in a more timely manner. Accordingly, additional frequencies will be required to build-out the system in the 700 and 800 MHz bands, to support this wide-area interoperability project."
Looking at that news update, and seeing what is currently happening in Maricopa and Pima Counties, suggest at least part is true. Perhaps, the name change didn't stick ? We'll have to do some more research on this....
Thanks for that link too,