ms. grover to testify. >> good afternoon. i am pleased to be here today to discuss tsa's implementation and oversight of the check conclusions. three weeks ago during the week ending in march 3, half of all aviation passengers received expedited screenings for one of three main reasons. they were enrolled, they were selected for one time pre-check based on the automated risk assessment, or were randomly assigned expedited screening at the airport through tsa's managed inclusion process. my remarks today reflect findings from the recently issued report on expedited screening. we support the move toward risk-based screening to improve passenger experience. assuming that passenger risks are properly medicated to ensure risks are minimized. we found the tsa uses several methods. for pre-checked and rowley's, in some cases they perform a background check to determine low risk status. or they accept passengers because they have already had a similar access meant, such as eligible members of customs and border protection's trusted t

ms. grover direct us to the appropriate entity that can give us an idea what that cost might be. i think that's an important factor to enter into these things. as this program majeures, and more time gets -- takes place between when they are initially vetted and up to the present time i think that more opportunity for people to go bad, if you will. and recurrent vetting might catch that. and also, mr. fletcher, as long as we're on the subject briefly, is it fair to say that there's a science to developing with algorithms that can be designed that might be able to do some of this recurrent vetting absent a criminal history check on a regular basis without a lot of cost once the algorithm has been established. >> we've been working with several private sector companies. and the science and technology director on evaluating risk algorithms that are not necessarily directly related to crime facility. we do believe from my personal executions with the national association of professional background screeners and discussions with some private sector data brokers that they can do an eff