This happened 11 years ago but I have a feeling this isn't the only case.

TSA Harasses Traveler After 'Seeing Bitcoin' In His Bag

https://www.businessinsider.com/bitcoin-tsa-screening-2014-2

There has been a lot of discussion and link-posting regarding the CBP - who are far from pristine on the privacy issues discussed - and less on the TSA and private security goon squads that can bring trouble to bitcoiners.

To this day, many uneducated people associate bitcoin with criminality. I think we all know a high level of education is not a requirement to join the TSA or private security.