The U.S. Army Corps of Engineers (USACE) has been tasked with soliciting and awarding the Design-Bid-Build contract for B90176 Hangar Door Expansion (HADES) at Fort Hood, Texas. This project is for the expansion of hangar doors at Facility B90176, Fort Hood, Texas, to support the HADES mission and accommodate the ME-11B (Bombardier Global 6500) aircraft. The project includes replacing two existing hangar doors each with a single 120-foot-wide rolling sectional door of equal height vertical fabric door with two sections of increased height, requiring substantial structural modifications to the pre-engineered metal building (PEMB)I including removal and replacement of wind posts, grade beams, spandrel beams, and portions of the concrete slab. Exterior improvements involve extending the trench drain and adjusting adjacent man-doors and wall mounted utility lines. Interior work consists of installing higher-capacity motors for the new door, refinishing and restriping affected areas of the hangar floor, making minor partition and finish modifications to support new flight group requirements, and the evaluation replacement of fan and motor control centers of existing Big Ass Fans (BAFs). Extensive structural, fire suppression, and life safety analysis will be required to ensure code compliance and safe integration of all modification.