surveillance systems. (F) A rapid reaction capability supported by aviation assets. (G) Mobile vehicle-mounted and man-portable surveillance capabilities. (H) Man-portable unmanned aerial vehicles. (I) Improved agent communications capabilities. (6) Big Bend sector For the Big Bend sector, the following: (A) Tower-based surveillance technology. (B) Deployable, lighter-than-air ground surveillance equipment. (C) Improved agent communications capabilities. (D) Ultralight aircraft detection capabilities. (E) Advanced unattended surveillance sensors. (F) A rapid reaction capability supported by aviation assets. (G) Mobile vehicle-mounted and man-portable surveillance capabilities. (H) Man-portable unmanned aerial vehicles. (I) Improved agent communications capabilities. (7) Del Rio sector For the Del Rio sector, the following: (A) Tower-based surveillance technology. (B) Increased monitoring for cross-river dams, culverts, and footpaths. (C) Improved agent communications capabilities. (D) Improved maritime capabilities in the Amistad National Recreation Area. (E) Advanced unattended surveillance sensors. (F) A rapid reaction capability supported by aviation assets. (G) Mobile vehicle-mounted and man-portable surveillance capabilities. (H) Man-portable unmanned aerial vehicles. (I) Improved agent communications capabilities. (8) Laredo sector For the Laredo sector, the following: (A) Tower-based surveillance technology. (B) Maritime detection resources for the Falcon Lake region. (C) Increased flight hours for aerial detection, interdiction, and monitoring operations capability. (D) Increased monitoring for cross-river dams, culverts, and footpaths. (E) Ultralight aircraft detection capability. (F) Advanced unattended surveillance sensors. (G) A rapid reaction capability supported by aviation assets. (H) Man-portable unmanned aerial vehicles. (I) Improved agent communications capabilities. (9) Rio Grande Valley sector For the Rio Grande Valley sector, the following: (A) Tower-based surveillance technology. (B)