The Secret Behind Wednesday's Show

Sept. 17, 2008 — -- "Everyone non-essential, get off the train," someone announced and I panicked for a second. Am I essential?

Doubtful, but I took a shot.

"Hey Jim," I said after a short but frantic search for "GMA" executive producer Jim Murphy. "Can I stick around and shoot this?"

"Of course," he said. "That's your job isn't it?"

He had me there. But this was no ordinary stop; this was top secret rehearsal for the next day's show. And this was no ordinary show; this was the show where we interview presidential hopeful Sen. John McCain, his wife Cindy and an unnamed country music superstar. No small thing.

Now due to the intense security of the location (luckily no cavity search was involved), I can't say much about what's going to happen. But I can subtly drop hints like...

- cows, goats, chickens and one or several pigs may be involved.

- the words "wow, this is amazing. Just look at it" were said several times during the walkthrough.

- John McCain will be there.

OK so the last one's not really a hint, but it's still pretty exciting. I never claimed to be sneaky.

Tune in this morning to fill in the blanks. But trust me about the cows.