The Thunderbird is a super-secret, off-menu item that my good friend Mike Garrity at NewsChannel 5 introduced me to. Wow. I'm not sure exactly what all is on it, although I know it comes with pastrami (or maybe it's corned beef?), lettuce, tomato, onion, and "Boom Boom" sauce. What is "Boom Boom" sauce, you may ask? Well, I'm not positive, but it's like a spicy Cajun 1000 Island. This sauce really makes the sandwich. It packs a nice kick, and has an amazing flavor. Excellent.