If all criteria are met, a "fit to fly" or travel clearance letter can be provided at the time of your visit in accordance with CDC guidelines. The goal of the TTIRP is to reimburse hospitality and travel-related businesses for losses they incurred during the COVID-19 pandemic.For anyone who has recently recovered from a COVID-19 infection and requires a letter to document their recovery for travel. Additional information below. Thank you for your interest in the Texas Travel Industry Recovery (TTIR) grant program. City of Houston employees are required to comply with all duly approved employee policies and procedures. Learn everything you need to know about traveling from outoftown to have plastic surgery at My Houston Surgeons in Houston, TX. Please review our Frequently Asked Questions (FAQ) to find out the answer to many of your questions. 2-4 -- Electronic Timekeeping Policy -- (revised 12.18. University of Houston-Downtown Concur Instructions.