36 C.F.R. § 1280.8 Will my belongings be searched?
Title 36 - Parks, Forests, and Public Property
Yes, at any time NARA may inspect all packages, briefcases, and other containers that you bring onto NARA property, including when you are entering or exiting NARA property.
Title 36: Parks, Forests, and Public Property
PART 1280—PUBLIC USE OF NARA FACILITIES
Subpart A—What Are the General Rules of Conduct on NARA Property?
General Information on Using NARA Facilities
§ 1280.8 Will my belongings be searched?