Wow, what a TON of helpful information. I really appreciate all the responses. I can definitely pick up more cash when I arrive in Florida, so goodbye to the wad of cash in my pocket. My purse won't fit inside my carry-on, but I will shove my credit cards, drivers license, cell phone, and house keys in there and lock it up. Let's just hope the iPad makes it through OK (I read that I don't have to take that out of its case).

The last couple of times I flew out of DCA, it took maybe 5 minutes to get through security. I'm really thankful for the warning that it may take over 30 minutes -- I'll be sure to get there early enough now.

My other airport is FLL and the list says backscatter is primary at my gates.

Things really have changed since I last flew. Maybe next time I'll just drive from DC to FL on I-95. It might be less stressful than flying.

Thanks again everyone.