; or (2) the Honor Flight program, set forth in section 44928 of such title. 3. Risk modified screening (a) In general Not later than 180 days after the date of the enactment of this Act, the Administrator of the Transportation Security Administration shall implement a risk modified screening protocol for lanes other than designated TSA PreCheck security screening lanes at Transportation Security Administration checkpoints to further segment passengers based on risk. Such risk modified screening protocol shall be implemented at as many Transportation Security Administration checkpoints as practicable, taking into consideration the level of risk at the airport at issue, the available space at such airport, passenger throughput levels at such airport, and checkpoint configuration at such airport, while maintaining adequate resources to appropriately serve passengers in TSA PreCheck security screening lanes at Transportation Security Administration checkpoints. (b) Eligibility Only low-risk passengers shall be eligible to undergo risk modified screening at Transportation Security Administration checkpoints described in subsection (a). Such low-risk passengers are those passengers who— (1) meet intelligence-based criteria outlined by the Administrator of the Transportation Security Administration in the form of rules-based risk algorithms