1. Short title This Act may be cited as the Transportation Security Transparency Improvement Act . 2. Sensitive security information; international aviation security (a) Sensitive security information (1) In general Not later than 90 days after the date of the enactment of this Act, the Administrator of the Transportation Security Administration (TSA) shall— (A) ensure clear and consistent designation of Sensitive Security Information , including reasonable security justifications for such designation; (B) develop and implement a schedule to regularly review and update, as necessary, TSA Sensitive Security Information Identification guidelines; (C) develop a tracking mechanism for all Sensitive Security Information redaction and designation challenges; (D) document justifications for changes in position regarding Sensitive Security Information redactions and designations, and make such changes accessible to TSA personnel for use with relevant stakeholders, including air carriers, airport operators, surface transportation operators, and State and local law enforcement, as necessary