After providing geotechnical engineering support for design of the projects, NTL, A Terracon Company, provided both Quality Assurance (QA) and Quality Control (QC) materials engineering and testing for reconstruction of Runway 3/21 and Taxiway A at the Great Falls International Airport. The project included evaluation of soils/bedrock used as subgrade and substantial grade raising. Construction control and assurance included earthwork compaction, along with new Portland cement concrete and asphalt paving materials testing on the main runway and connecting taxiways. Due to the compressed runway project schedule, NTL/Terracon provided engineering technicians and laboratory support for extended shifts including night shifts for rigid pavement operations. NTL/Terracon performed approximately 6,000 nuclear field density tests over the 6-month runway construction schedule, and cast flexural strength concrete beams for rigid pavement used in military aircraft arrestor barriers constructed near each end of the runway.