basis, to airports to carry out eligible projects described in subsection (b). (b) Eligible projects The Administrator may make a grant under the Program only for a project that facilitates the acquisition and installation by an airport of sensor systems, software, passenger signals, or other technologies consistent with the purposes of the Program, including projects that facilitate— (1) the modernization of technologies to provide more efficient check-ins, shortened security lines, and Wi-Fi and GPS upgrades, as well as improvements of aircraft turnaround times for on-time boarding and flights