As the prime contractor, we managed the ground surveys and IFSAR data collection mapping flights required to update the digital elevation model, and performed detailed QA/QC to obtain first-time acceptance of all deliverables in various file formats for different clients. The project included a GPS survey to obtain a new elevation for Denali (formerly Mt. McKinley). In order to obtain accurate GPS data for Denali, we assembled a team of surveyors from Denver-based CompassData along with a scientist from the University of Alaska-Fairbanks to climb the mountain with extensive GPS equipment and supplies for the summit. The trip, sponsored by USGS and the National Oceanic and Atmospheric Administration's (NOAA's) National Geodetic Survey (NGS), was followed a year later by a second climbing expedition to use ground-penetrating radar (GPR) to survey the depth of the ice and snow at the peak. We also completed several pilot projects using Alaska’s ifsar, and produced, for example, an elevation-derived National Hydrography Dataset (NHD) and NHD Plus products.