Special Notice Department of Defense Support Services: This is a notice of intent for the sole source procurement of an extension of services with General Dynamics One Source. The services provided by General Dynamics One Source are IT Services to the National Defense University. The extension of services will be from January 13, 2018, to February 28, 2018. This extension will allow for the implementation of a long-term competitive follow-on contract. The competition of this requirement and award to any other source would result in duplication of effort and disjointed management and provision of the established IT Services. Interested parties may send challenges to Cathy Kelly at cathy.kelly@navy.mil. This notice of intent is not a request for competitive proposals, but all challenges received within one day after the publication of this synopsis will be considered by the Government. The Government will determine whether to conduct a competitive procurement based on the information received.