; 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) Tunnel detection systems and other seismic technology. (I) Fiber-optic cable. (J) 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. .