Conspiracy?

I've never been one to believe in conspiracy theories and I believe Arlen Specter's "Single Bullet Theory," however, I just returned from Dallas, Texas, and for the first time in a very long time, my images are corrupt. Let me be more specific; the images from the National Science Teachers Association's national convention that I was covering all came out fine, but the images of Dealey Plaza I made on Saturday morning, are all corrupt. I managed to rescue a few, but I am unable to open the best ones. Conspiracy? I'm starting to believe.