The 42d Contracting Squadron, Maxwell Air Force Base (AFB), AL, is seeking sources that can provide Interior Cleaning Services for Barnes Center, Maxwell AFB, Gunter Annex, AL 36112. All feedback and ... The 42d Contracting Squadron, Maxwell Air Force Base (AFB), AL, is seeking sources that can provide Interior Cleaning Services for Barnes Center, Maxwell AFB, Gunter Annex, AL 36112. All feedback and information received may be used to determine the appropriate acquisition strategy. If interested, see attached Sources Sought and DRAFT Statement of Work (SOW) for requirement summary and submission instructions. Please see atached documents for additional details.