I know there aren't alot of spotters from CMH, but here is some good news that I got in an e-mail from the head of the public relations department. I just e-mailed her to let her know I would be there and got this reply:
Thanks for letting me know. You don't need to tell the person anything when
they search your car. If someone comes up to you as you're taking photos let
them know that you've cleared it with me.
I'll let public safety know that you'll be out taking photos, but someone
could still ask you some questions.
Have fun--it should be pretty today!