procedures at airport checkpoints. Sec. 509. Canine detection research and development. Sec. 510. Security incident response at airports and surface transportation hubs. Sec. 511. Alternate new security screening personnel training program cost and feasibility study. Sec. 512. Prohibition of advance notice of covert testing to security screeners. Sec. 513. Explosive detection technology. Sec. 514. Recurrent vetting for surface transportation credential-holders. Sec. 515. Biometrics for TSA PreCheck. Sec. 516. Secure Flight program. Sec. 517. Known Crew Member program. Sec. 518. Screening Partnership Program. Sec. 519. Headquarters efficiency. Sec. 520. Repeal of regulations. Sec. 521. Sensitive security information. Sec. 522. International aviation security. Sec. 523. Office of Inspection accountability. Sec. 524. Checkpoints of the future. Sec. 525. Air cargo security. Sec. 526. Childcare. Sec. 527. Passengers with physical or cognitive disabilities. Sec. 528. TSA Human Capital Strategic Plan. Sec. 529. Screening technology deployment. Sec. 530. Review of aviation security stakeholder access to Homeland Security Information Network. Sec. 531. Airport public area security enhancement. Title VI—Emergency Preparedness, Response, and Recovery Subtitle A—Grants, Training, Exercises, and Coordination Sec. 601. Urban Area Security Initiative. Sec. 602. State Homeland Security Grant Program. Sec. 603. Grants to directly eligible tribes. Sec. 604. Law enforcement terrorism prevention. Sec. 605. Prioritization. Sec. 606. Allowable uses. Sec. 607. Memoranda of understanding. Sec. 608. Grants metrics. Sec. 609. Grant management best practices. Sec. 610. Prohibition on consolidation. Sec. 611. Maintenance of grant investments. Sec. 612. Allowable uses of funds for public transportation security assistance grants. Sec. 613. Periods of performance for public transportation security assistance grants. Sec. 614. Comptroller General review of public transportation security assistance grant program. Sec. 615. Port security grant