People would do well to read Catch 22, a novel which set the standard for reasonable behaviour.
Yossarian wants to be relieved from bombing duty because the missions are driving him crazy.
Unknowingly, he passed the test of "Catch 22": you can't be crazy if you think you are crazy; consequently you must be fit for duty.
Only if you DON'T think you are crazy are you unfit for duty because only a crazy person would respond to the stress of bombing duty by insisting he wasn't crazy.
It is highly unlikely a true terrorist would sass a police officer while on a reconnassince mission.
He/she would have a cover story ready, be very polite and produce any (false) ID requested of him/her.
He/she would certainly not attract attention by asking naive and obvious questions.
Ipso, ergo and therefore said reporter did not fit the profile of a potential terrorist by his very behaviour.
Put yourself in the position of LEO's, Airport Security and Prison Guards.
Would you prefer to deal with someone who is geniunely innocuous and live to collect your pension?
Or would you rather confront someone who is a serious threat capable of killing you overtly or covertly in every encounter?
Most career bureaucrats choose to play it safe than sorry with "busywork" transactions.
Best regards,