Per the news article: "Guillaume had no explanation for having so many credit cards in one man's name."
1) a TWENTY THREE year old was carrying FIFTY credit cards.
2) the surname on the cards is KATTA and the suspects surname is GUILLAUME.
3) the suspect had no explanation about the quantity of cards. Not: "I like getting the sign up bonuses, UNDER SOMEONE ELSES NAME", nor "I just never cut up my old cards; I keep them TO PROVE THAT I HAVE SOMEONE ELSES CREDIT CARDS". He had no explanation.
4) sounds like the TSA folks spotted something and looked into it further. AND one of them had a enough conscience to stall the suspect while they looked into it even more. (Re: stalled the suspect for enough time to look at APBs, etc.) - wouldn't you like it if someone got caught with FIFTY credit cards in your name?
So, TSA +1 (I NEVER thought I would post that!)