I was headed from Atlanta to Philadelphia for an extended business trip and being that Pennsylvania has reciprocity with Georgia I decided to take a couple friends with me. I was pleasantly surprised at how smooth the whole transaction went.
I carried my ammo in its original containers in a separate checked-in bag. I chose a M&P 40c and LCP and carried both, unloaded in the M&P's case secured with a Masterlock. The AirTran rep asked where was the ammunition, I told her in the other bag. She could see they were both unloaded with the slides locked back. With the case unlocked, she placed a red tag on top and had me sign it stating it was an unloaded firearm and then she sent me to TSA.
The TSA agent then confirmed it was unloaded, commented on the beauty of the M&P, then taped the red tag to the top of the case with a TSA Inspection sticker. He then let me relock my case and my luggage and off to Philly I went!
Hopefully the return trip will be just as uneventful.