Context of Act To Authorize Appropriations during the Fiscal Year 1971 for Procurement of Aircraft, Missiles, Naval Vessels, and Tracked Combat Vehicles, and Other Weapons, and Research, Development, Test, and Evaluation for the Armed Forces, and To Authorize Real Estate Acquisition and Construction at Certain Installations in Connection with the Safeguard Anti-Ballistic Missile System, and To Prescribe the Authorized Personnel Strength of the Selected Reserve of Each Reserve Component of the Armed Forces, and for Other Purposes