Undersheriff William "Bill" Nelson is a 38-year veteran of law enforcement. He currently oversees the Support Services Division of the Larimer County Sheriff's Office. His career started in 1976 in Cheyenne, Wyoming as a Dispatcher, Reserve Deputy Sheriff, and then Deputy Sheriff. In 1979, he moved to Fort Collins, Colorado and joined the Larimer County Sheriff's Office as a Patrol Deputy.
During his career with Larimer County he has worked as a Deputy, Investigator, Emergency Services Specialist, and Captain/Major of the Operations, Support Services, and Jail Divisions. He has supervised major investigation cases, has been in charge of SWAT, Lead Firearms Instructor, and managed incidents involving wildland fires, search/rescue, water rescue, emergency management, and other disasters.
Bill holds a BA in Industrial Arts and Sciences from Colorado State University and an AA degree in Criminal Justice. He is a 2001 graduate of the Southwestern Law Enforcement Institute and a 2008 graduate of the FBI National Academy. He has been involved in teaching many Law Enforcement, Rescue, Incident Command System, and Incident Management classes. He is presently representing the County Sheriffs of Colorado on the Colorado Emergency Resource Mobilization Working Group and has served on the Search and Rescue Fund Board of Directors for over 12 years.