A six-day search across one of the most formidable stretches of the American West ended with a remarkable rescue when crews located Missouri Deputy Attorney General Shaun Mackelprang alive in Wyoming’s Wind River Range after his solo attempt to reach the state’s highest summit.
Mackelprang, 55, was found near Scott Lake on the morning of Wednesday, August 26, bringing an extensive search involving ground crews, drones, aircraft and information gathered from other backcountry travelers to a successful conclusion. He was dehydrated, disoriented and exhausted when rescuers reached him, but conscious and able to be evacuated from the wilderness by helicopter.
The Missouri attorney had departed from the Green River Lakes Trailhead on August 20 with Gannett Peak as his destination. Rising 13,804 feet above sea level, Gannett is Wyoming’s highest mountain and sits deep within the rugged Wind River Range, where reaching the summit requires considerably more than an ordinary recreational hike.
Mackelprang was traveling alone and expected to complete the journey within several days. When he failed to return and his vehicle remained at the trailhead, concern intensified and authorities initiated search operations. The Sublette County Sheriff’s Office coordinated the response with Tip Top Search and Rescue, deploying personnel across a vast landscape where steep terrain, considerable distances and changing mountain weather complicated the effort.
Investigators eventually obtained an important piece of evidence establishing that Mackelprang had successfully reached his objective. Another hiker photographed the register maintained atop Gannett Peak, where Mackelprang had signed his name on August 21. The entry confirmed that he had reached Wyoming’s highest point and indicated that his difficulties developed during the return journey rather than on the ascent.
The summit represented another milestone in an ambitious personal undertaking. Mackelprang has been attempting to reach the highest point in each of the 50 states, and Gannett Peak was reportedly the 45th summit in that pursuit.
Information supplied by hikers became increasingly valuable as rescuers attempted to reconstruct his movements through the mountains. Backcountry travelers reported encounters, examined photographs and provided GPS information that allowed search personnel to progressively narrow the territory requiring examination. Authorities also obtained information concerning the location of Mackelprang’s camp.
Severe weather added another dimension to the disappearance. Thunderstorms and difficult conditions had moved through the mountains during the period Mackelprang was expected to return. His family initially considered the possibility that weather had simply delayed his progress, but concern escalated as additional days passed without contact.
Searchers ultimately concentrated resources across the terrain between confirmed points along his journey. Ground teams worked alongside the Sublette County Sheriff’s Office Drone Team while Tip Top Search and Rescue provided helicopter support. The operation demonstrated the increasingly important combination of traditional wilderness search techniques, aerial reconnaissance and digital information supplied by people who had recently traveled through the area.
At approximately 9:45 Wednesday morning, a ground search team located Mackelprang near Scott Lake, several miles below Gannett Peak and away from the area where his camp had been established. Rescuers stabilized him and prepared him for helicopter extraction before he was transported for medical evaluation and reunited with family.
By Thursday, Mackelprang was recovering in a Pinedale hospital, reportedly bruised, scraped, sore and exhausted following the ordeal. The Sublette County Sheriff’s Office subsequently reported that his recovery was progressing well and indicated that investigators would allow him time to recuperate before conducting a more extensive debriefing.
Exactly what occurred between Mackelprang’s August 21 summit and his August 26 rescue has not been fully established. Available information indicates that he became disoriented during his descent amid difficult weather, but authorities have refrained from presenting a definitive reconstruction while he recovers.
Mackelprang’s professional position added national attention to the disappearance. He serves as a deputy attorney general in Missouri, and the Missouri Attorney General’s Office confirmed his safe recovery following the Wyoming rescue.
The successful operation ultimately depended upon an unusual convergence of evidence and manpower. A signature left on a mountaintop, encounters with fellow hikers, photographs, GPS information, drone reconnaissance, helicopter support and ground teams gradually transformed an enormous wilderness search into a concentrated effort around Mackelprang’s probable route.
Six days after walking away from the Green River Lakes Trailhead toward Wyoming’s highest mountain, Mackelprang returned from the Wind River Range alive, closing a search that had stretched across miles of isolated alpine country and mobilized rescuers, law enforcement personnel, fellow hikers and members of the public.

