§ 9776.
If in an emergency the President considers it urgent, a temporary installation or fortification may be built on private land if the owner consents in writing.
([Aug. 10, 1956, ch. 1041], [70A Stat. 591]; [Pub. L. 91–393, § 5], Sept. 1, 1970, [84 Stat. 835]; [Pub. L. 116–283, div. A, title IX, § 923(e)(18)], Jan. 1, 2021, [134 Stat. 3819].)