Sources Sought DEPT OF DEFENSE, DEPT OF THE ARMY is seeking Sentinel Environmental Permitting and Compliance Support at FE Warren AFB, WY. This service is needed to assist the Air Force Sentinel Systems Directorate in completing environmental requirements for ongoing planning, design, and construction efforts for Sentinel. The project includes up to 600 miles of utility corridors, 36 MAFs and/or LFs, and surveying approximately 7,300 acres of biological and 9,100 acres of cultural field. The contractor will be responsible for providing environmental permitting and compliance tasks for real estate acquisition and advancing the construction of Sentinel utility corridors and facilities. The project has a performance period of 365 calendar days from NTP. Interested contractors are encouraged to submit a narrative demonstrating their experience in NEPA design projects of similar nature.