Richard Nixon said...
The first sentence of Section 1 of this order shall not apply to those offices and installations, or parts thereof, in the Department of State, the Department of Defense, or other departments, independent establishments, and governmental agencies which the heads thereof determine should remain open for reasons of national security or defense or other public reasons.
Context
Executive Order 11700—Providing for the Closing of Government Departments and Agencies on Thursday, January 23, 1973
01/22/1973