sentences:  Upon arriving at Utah, Jennings drew on his past experience to initiate a state-wide archaeological survey of the poorly known region through extensive surveys and test excavations.During his career, he conducted research and trained students in sites in the Great Basin, the Glen Canyon of the Colorado River, throughout Utah, and in American Samoa.Jennings' work on Danger Cave in the 1950s was considered ground-breaking due to his exacting standards in excavation and data analysis.