but at the end of the day for gao it comes down to a simple question which is, does the program work and how do you know? what have we done to address immediate challenges, retrained the front line workforce. should i start with the junior most person in the organization standing on a screening line and i think about what it mean for that individual to do their job effectively. so here are some of the issues the office has with the agency. they say that tsa has not evaluated the effectiveness of new screening technologies, they also say tsa has no consistent performance measures for its secure flights program, which is essentially a program that allows them to match passengers names against terror watch lists. and, lastly, the gachlt o says has failed to use data to identify possibilities other areas to improve and strengthen