Mesa County Sheriff Posse

Our Board

Doug Lucas


Born and raised in Grand Junction, Colorado, Doug is a second generation Posse member.  His father, Jack Lucas was one of the founding members from 1957.  Doug has been a Posse member for many years, serving as a board member and now as president.

He retired from the Grand Junction Fire Department as the Investigations  Coordinator / EOD after 17 years of service.

When not involved in Posse activities Doug enjoys volunteering as a hunting guide/teacher for the Colorado Parks and Wildlife Hunter Outreach program.  

Donnie Wynkoop

1st Vice President

Retired after serving as the manager of Fruita City Market for 34 years, Donnie is currently a philosopher and cowboy poet.  He also served as the vice president of the Chamber of Commerce and was on the Board of Directors of Family Health West.  Now he spends his time with his Harley, his horses and grandchildren.

Rob Hann

2nd Vice President

When he’s not volunteering his time with the Sheriff Posse, Rob enjoys extreme sports such as base jumping, mountaineering and scuba diving.  During the summer you can often find him exploring the depths of the Kannah Creek watershed.  He is also an accomplished chef, preparing gourmet feasts of top shelf alfalfa and clover for cattle across the grand valley.  In fact, his culinary prowess is so renowned that bovine from across the nation make it a point to visit him during their travels.

Steve Eisenach

3rd Vice President

Steve is a livelong resident of Mesa County, residing on Glade Park for over 40 years.  He has been a Posse member since 1984.  He loves the outdoors and working with livestock.

Dianna Thearin


Diana is a world class square dancer, having travelled the world with the Grand Junction Cubettes.  In her youth she invented Par K’horse, which is essentially parkour on horseback, where the horse will roll and flip over obstacles whilst bearing a rider.  Unfortunately, due to the extensive training required by both the horse and handler, the sport never caught on.  Now, she devotes her time to becoming the first rambutan farmer in the continental United States.

Bonnie Stiner


Bonnie has been a posse member for 21 years with great memories over those years &  is looking forward to more in the future.
She and her horse, HarleyBrown enjoy rides through the canyons in the wintertime and the mountains in the summertime.

Bob Johnston

Board Member

Bob has been a member of the Sheriff Posse since 1982.  He has assisted in search and rescue, gymkhanas, ropings, and community events.

Clint Miller

Board Member

Clint retired from public school teaching in 2005, retired from the Collbran Job Corps in 2013, and has been a MCSP member for nine years. He and his wife, Karla, enjoy raising beef cattle and riding their horses on their mini-ranch on East Orchard Mesa. After retiring from the Grand Junction Symphony (30+ years), he continues to play the French horn in several Western Slope ensembles including the Valley Symphony in Montrose, the Colorado Brass Band in Gunnison, and others.

Rich Idler

Board Member

Rich is a Colorado Native and grew up in Fruita.  He is a big game guide and ranch hand for Powell 4A Mountain Outfitters.  Additionally, he works at City Market as a District Human Resource Manager.