they have been putting millions of passengers into tsa precheck who are not precheck. you do not have an entire population in precheck that are not vetted. >> reporter: cnn put this to tsa administrator. he said the agency is not prioritizing wait times over security. >> i won't discuss any of our particular procedures, but we do provide the level of security that we think is appropriate based on the risk of the passenger. >> reporter: brainard said the issues he's raised is problematic for an agency with a 95% failure rate in detecting dangerous items at the check point. that's according to a government audit in 2015. another audit two years later found there were still v vulnerabilitie vulnerabilities. >> when you sit back and watch these things happen, it is the most frustrating thing you could imagine. >> reporter: going public is his last resort. he's filed an official whistle-blower complaint with the office of special counsel.