The signs pointed to terrorism - that's exactly the impression the two men, an NBC News producer and cameraman, were trying to create.
Such begins the saga (detailed here and here) of two "suspicious" guys who ended up being reporters trying to show how insecure our airports really are. Instead, they ended up with their butts in jail, showing just how secure they really are.
Now, in and of itself I have no problem with the media trying to pull something like this off. Keeps everyone on their toes. What I do have a problem with is that instead of running a big prominent "stay tuned to see how brave men and women are succeeding in making your airports safer" story, they're just going to act like nothing happened and bury the whole thing. Because, you see, proving that it all works doesn't sow terror, discord, and discontent. Things that improve aren't sexy, and don't sell advertising.