You know doing that requires literacy and thinking skills. The TSA is not known to hire people who have high intelligence or who show a propensity for critical thinking. They want people who unquestioningly follow orders from above them in their chain of command. If the TSA employed people who thought for themselves, the higher ups would have a much harder time getting the screeners to buy into the idea that their job is important and that they are highly trained, elite security officers who protect America from terrorists.