In this chapter: (1) 3D The term “ 3D ” means 3-dimensional. (2) 3D elevation data (A) In general The term “ 3D elevation data ” means 3D, high-resolution data obtained using LiDAR, IfSAR, or other methods over the United States (including territories). (B) Inclusions The term “ 3D elevation data ” includes terrestrial and bathymetric elevation data. (3) 3D elevation program The term “ 3D Elevation Program ” means the 3D Elevation Program established under section 3104(a) of this title . (4) IfSAR The term “ IfSAR ” means interferometric synthetic aperture radar. (5) Indian tribe The term “ Indian tribe ” has the meaning given the term in section 5304 of title 25 . (6) Lahar The term “ lahar ” means a large debris flow of mostly volcanic material that is— (A) often fast-moving; and (B) a hazard in watersheds downstream of volcanic peaks. (7) LiDAR The term “ LiDAR ” means light detection and ranging. (8) Secretary The term “ Secretary ” means the Secretary of the Interior, acting through the Director of the United States Geological Survey . (9) State The term “ State ” means— (A) a State ; and (B) the District of Columbia. (10) State office The term “ State office ” means any unit of State government that handles the identification, mapping, assessment, and research of landslide hazards or responding to landslide events, including— (A) a State geological survey office; (B) a State department of emergency response; and (C) a State department of transportation . (11) Territory The term “ territory ” means— (A) the Commonwealth of Puerto Rico ; (B) Guam; (C) American Samoa; (D) the Commonwealth of the Northern Mariana Islands; (E) the Federated States of Micronesia; (F) the Republic of the Marshall Islands; (G) the Republic of Palau; and (H) the United States Virgin Islands. ( Pub. L. 116–323, § 2 , Jan. 5, 2021 , 134 Stat. 5075 .) Statutory Notes and Related Subsidiaries Short Title Pub. L. 116–323, § 1 , Jan. 5, 2021 , 134 Stat. 5075 , provided that: “This Act [enacting this chapter] may be cited as the ‘National Landslide Preparedness Act’.”