Mark Hubert Underhill, 65, passed away on Saturday, March 10, 2018. Mark was born on May 7, 1952, in Norfolk, Nebraska, to George and Lee Chapman Underhill. He graduated from Sterling High School in Sterling, Colorado, in 1970 and proudly served in the United States Navy, receiving an honorable discharge in 1973. Mark is survived by his sons Chris, Jeff, and Greg Underhill, and daughter and son-in-law, Janelle and Dan Dinsmore, and three grandchildren. He is preceded in death by his parents. Mark will be buried in a private ceremony on March 19, 2018, at Fort Logan National Cemetery. In lieu of flowers, please support our veterans through donation or volunteering at your local Veterans Affairs (V.A.): https://www.volunteer.va.gov. Services with Military Honors will be held at 12:15 on Monday, March 19, 2018, in the Fort Logan National Cemetery in Denver.