Published Feb. 3, 2021 The headquarters building for the SHIELD 5 missile defense project in Qatar. The SHIELD 5 program built missile defense infrastructure project was managed by the U.S. Army Corps of Engineers on behalf of Qatar. Large scale projects such as this, which involve multiple sites and a long construction schedule require significant analysis from the District's cost engineering team to provide an accurate assessment of cost. Contractors pave a runway during repairs at Ali Al Salem Air Base Kuwait. The project proved particularly challenging for the cost engineers from the U.S. Army Corps of Engineers Middle East District as extreme temperatures impacted the quality of the concrete.