As noted, KRWM was the sister station of KBRO (circa 1965). The two were Bremerton's legacy stations until KTNT (then KPMA "positive mental attitude") went belly-up and moved to Silverdale under new owners. I moved to the area in '86. At the time, KITZ was under construction at the Kitsap County Fairgrounds. Prior to completion, their engineer got the gig to move KBRO-FM's transmitter from the Forest Ridge location of the AM tower to Gold Mtn. I finished the last part of the KITZ install as they moved from a single-wide trailer to their new building in '87.
After KBRO-FM moved out, became KHIT, KNUA, KKNW and KRWN (did I miss one?) I've worked on the various transmitters (the original Gates and two successive Nautels) for 3 of the 4 successive owners of the AM (including a bankruptcy trustee). I never saw the FM at Forest Ridge. By the time I got there, all vestiges of the installation were removed from the building.
After the stations split and went to different owners, KBRO-AM has taken its place in the obscurity of many of its sibling 1kW local signals, but seems to have found a home as part of a Spanish-language Christian network out of White Center. At least this iteration has lasted longer than all but the original. Over the past 33 years or so, it's been various full-service attempts, a short stint as part of a California-based gay/lesbian service and around 3 years as part of the ESPN Deportes network. As a stand-alone, KITZ suffered much the same fate; attempts at live, full-service ($$$) operation by 4 ownership groups. Currently, it's a mostly-automated media outlet for the Seattle-based 2nd Amendment Foundation.