Denali Universal Services, based in Anchorage, Alaska, operates primarily in the security and safety services sector. The company provides a range of services including security officer staffing, particularly for high-risk environments such as oil refineries, exemplified by their work at the Marathon Refinery in Anacortes, WA. They are known for offering roles that include access control and other security functions. Denali Universal Services is a public company with multiple locations, although specific revenue details are not disclosed.