On a spring morning in Cortez, Colorado, the life of Dale Dewain Claxton, a 45-year-old male police officer, was brought to an abrupt and violent end. On May 29, 1998, Claxton, a three-year veteran of the Cortez Police Department, identified a stolen water truck and pulled the vehicle over on a county road. Before he could even unbuckle his seatbelt, one of three men inside the truck emerged and opened fire with a fully automatic rifle, striking the officer numerous times and killing him instantly as he sat in his patrol car.
The brazen ambush sparked one of the largest manhunts in the history of the American West. The three suspects, identified as Robert Matthew Mason, Jason Wayne McVean, and Alan 'Monte' Pilon, immediately fled the scene. Their escape initiated a dangerous pursuit through the rugged canyon landscape of the Four Corners region, during which two Montezuma County sheriff's deputies were also shot and wounded. The assailants, described as anti-government extremists, managed to abandon their vehicle and disappear into the vast desert terrain, triggering a massive search operation involving over 500 law enforcement officers from four states, as well as the National Guard.
The intensive manhunt for the three fugitives unfolded over several years, but it did not result in any arrests. The search for justice took a different turn as the suspects were discovered one by one. About a week after Officer Claxton's murder, Robert Mason was found dead from what was determined to be a self-inflicted gunshot wound. The search for the other two men continued. In November 1999, the skeletal remains of Alan Pilon were discovered. The final chapter of the manhunt concluded in June 2007, when the remains of Jason McVean, believed by authorities to have been the triggerman in Claxton's death, were found by a rancher in Utah. Like the others, it is believed he took his own life, closing the long and arduous search for the men responsible for the officer's death.