capabilities. (E) Man-portable unmanned aerial vehicles. (F) Improved agent communications systems. (17) Houlton sector For the Houlton sector, the following: (A) Increased flight hours for aerial detection, interdiction, and monitoring operations capability. (B) Mobile vehicle-mounted and man-portable surveillance capabilities. (C) Advanced unattended surveillance sensors. (D) Ultralight aircraft detection capabilities. (E) Man-portable unmanned aerial vehicles. (F) Improved agent communications systems. (18) Transit zone For the transit zone, the following: (A) Not later than 2 years after the date of the enactment of this Act, an increase in the number of overall cutter, boat, and aircraft hours spent conducting interdiction operations over the average number of such hours during the preceding 3 fiscal years. (B) Increased maritime signals intelligence capabilities. (C) To increase maritime domain awareness— (i) unmanned aerial vehicles with maritime surveillance capability