; 6 U.S.C. 223(a)(7) ). (6) Tactical infrastructure The term tactical infrastructure includes boat ramps, access gates, checkpoints, lighting, and roads. (7) Technology The term technology includes border surveillance and detection technology, including the following: (A) Tower-based surveillance technology. (B) Deployable, lighter-than-air ground surveillance equipment. (C) Vehicle and Dismount Exploitation Radars (VADER). (D) 3-dimensional, seismic acoustic detection and ranging border tunneling detection technology. (E) Advanced unattended surveillance sensors. (F) Mobile vehicle-mounted and man-portable surveillance capabilities. (G) Unmanned aircraft systems. (H) Other border detection, communication, and surveillance technology. (8) Unmanned aircraft system The term unmanned aircraft system has the meaning given such term in section 44801 of title 49, United States Code. . 1112. Air and Marine Operations flight hours (a) Air and marine operations flight hours The Secretary shall ensure that not fewer than 95,000 annual flight hours are carried out by Air and Marine Operations of CBP. (b) Unmanned aircraft systems The Secretary, after coordination with the Administrator of the Federal Aviation Administration, shall ensure that Air and Marine Operations operate unmanned aircraft systems on the southern border of the United States for not less than 24 hours per day for 7 days per week. (c) Primary missions The Commissioner shall ensure that— (1) the primary missions for Air and Marine Operations are to directly support— (A) U.S. Border Patrol activities along the borders of the United States; and (B) Joint Interagency Task Force South operations in the transit zone; and (2) the Executive Assistant Commissioner of Air and Marine Operations assigns the greatest priority to support missions outlined under paragraph (1). (d) High demand flight hour requirements The Commissioner shall ensure that U.S. Border Patrol Sector Chiefs— (1) identify air support mission-critical hours