This is a pre-solicitation synopsis. The Air Force Life Cycle Management Center (AFLCMC), Human Systems Division, AFLCMC/WNUK, intends to award a multiple award contract on a sole source basis to Belleville Shoe Manufacturing Company (Belleville) and Propel, LLC. (Propel) for the Cold Weather Aviation System (CWAS) Boot program. The Government issued a Sources Sought Synopsis on 21 November 2015, WNUK-15-0005, and received responses from four sources. Only two, Belleville and Propel, were Berry Compliant and able to meet the program requirements including improved foot protection in extreme cold temperatures. After several industry days since then, Belleville and Propel remain the only two responsible sources that can meet the program requirements. The Government intends to award the effort pursuant to the authority of 10 U.S.C. 2304(c)(1) as implemented by FAR 6.302-1, Justification: Supplies required are available from only one or a limited number of responsible source and no other type of supplies or services will satisfy agency requirements. This is not a request for competitive proposals and no solicitation is available. All interested sources must respond in writing with clear and convincing evidence to support their ability to provide timely and effective services within fifteen (15) days of this publication. A determination by the Government not to compete this action based on responses received is solely within the discretion of the Government. The National American Industry Classification System (NAICS) code for this procurement action is 316210. Please indicate number of employees relative to the size standard of 1,000 for determination of small business status. Responders shall include their assigned DUNS number and their Commercial and Government Entity (CAGE) code. The point of contact for this action is AFLCMC/WNUK, 1981 Monahan Way, Building 12, Wright Patterson AFB, OH 45433-7101, Attn: Angela "Nichole" Knell, phone: (937) 904-3496 or email: angela.knell.1@us.af.mil. The Contracting Officer is Ms. Abigail Brugger, phone: (937) 938-3800 or email: abigail.brugger@us.af.mil. Lt. Col Brian Miller, AFLCMC/AZ-AP, phone: (937) 255-5512 or email: brian.miller.15@us.af.mil, has been appointed as Ombudsman to hear concerns from offerors, or potential offerors, during the proposal development. The purpose of the Ombudsman is to communicate contractor concerns, issues, disagreements, and recommendations to the appropriate government personnel. Existence of the Ombudsman does not diminish the authority of the program director or the contracting officer. Accordingly, the Ombudsman does not participate in the preparation of solicitations, the evaluation of proposals or the source selection process and, therefore, for routine matters on individual solicitations, please contact the buyer at the telephone number listed herein. When requested, the Ombudsman will maintain strict confidentiality as to the source of the concern.