It was only the second one I have ever had in a public place. The first one I ever had in public took me by surprise and I didn't know it was a panic attack until I went home and googled my symptoms. I was ready to go to the hospital until I read that I was probably just panicking.

I usually have them at home in anticipation of something (Which I then try hard to avoid). I have had one or two in front of my T.