Not in the terminal, but on top of the terminal.

PHX T4 to be exact.

I was shooting photos of the planes for a photography class I was taking to actually learn how to use my new toy (a loaded DSLR).

A TSO approached me and told me that I needed to cease taking photos immediately and delete the photos I had taken. My professor had given all the students a "photographer's rights" booklet and I remembered the part about airports, in particular PHX.

I told the TSO that PHX was a municipal facility and that I would stop taking photos only if a Phoenix Police Officer was present and informed me that what I was doing was illegal (it wasn't and isn't). The TSO insisted that the airport was governed by "federal and TSA law" (I loved that bit of garbage) and told me to cease photographing the airplanes or he would have to confiscate my camera.

I pulled out my cell phone and told him I was dialing 911 to have a cop sent to my location and the TSO scampered off telling me that he was going to go get his supervisor and a cop and have me arrested.

Ninety (90) minutes later, I was still taking photos and enjoying the warm desert air.

TSOs love their que es mas macho.

BTW, a great way to diffuse the situation if someone tells you to delete your photos is to retort, "Are you officially instructing me to erase potential evidence?"