Published Feb. 25, 2021 Waves batter the shoreline as crews work to repair the seawall at Cape Lisburne on Aug. 4, 2019. Major storms in 2011 and 2012 caused erosion to the previous structure, which impacted the use of the runway. Over five construction seasons, the U.S. Army Corps of Engineers – Alaska District worked with 611th Civil Engineer Squadron to make repairs to the seawall and ensure protection of the runway from the elements. Julie Mages, deputy base civil engineer at the 611th Civil Engineer Squadron, and Lauren Oliver, hydraulic engineer at the U.S. Army Corps of Engineers – Alaska District, assess the seawall at Cape Lisburne on Sep. 30, 2019. The protective barrier prevents harsh waves and ice from flooding and damaging the adjacent runway, which serves as the primary avenue for people and supplies to reach the remote military base. The site is operated by the Pacific Air Forces Regional Support Center and provides aerospace surveillance to detect and allow for an early response to potential threats to North America.