I think it's been shown that standard x-ray baggage scanners will not harm film, especially just one time through. Recently a new highpowered anti-terrorist scanner has been placed in airports around the world. It pre-scans with a low powered sweep and if it detects anything suspicious it hits with a high powered scan which will definitely fog film, whether it's in a film shield bag or not.(posted 8888 days ago)Chances are the machine you checked your film through was not one of these. But the moral of the story, whenever possible have your film or camera bag, hand inspected.