Congress asks more questions about TSA blacklists

If you ever get a boarding pass with either "SSSS" "*S*" printed on it, then arrive earlier because you're going to be delayed heavily at security.

Also, if you believe you're getting extra screening due to an error/mismatch, then you can apply for a Redress Number here:

https://www.dhs.gov/dhs-trip

Give the Redress Number to the airline during booking, and in theory, it should stop erroneously matching you to a No-Fly-List individual. You can also do TSA-Pre but that isn't free like the Redress Number (approx. $80 every 5-years).