"As many of you are aware, annual funding for the government expires at midnight on September 30. The Administration, Secretary Carter, and I continue to strongly believe that a lapse in funding should not occur. There is more than enough time for Congress to prevent this from happening. The administration is willing to work with Congress to enact a short-term continuing resolution to fund critical Government operations and allow Congress more time to negotiate an agreement that invests in middle-class economic priorities and helps our entire economy grow. However, prudent management requires that we continue to prepare for all contingencies, including the possibility that a government shutdown could occur at the end of the month."
Department of Defense: http://www.defense.gov/