I went through the scanner and my bags did as well, but I forgot to empty my water bottle. In the past, TSA agents have asked if they could empty it for me and rescan it. This time the TSA agent said I would either have to throw it away or leave the gate and reenter the whole security line.
I'll admit that I should have dumped my water, but I was bewildered by how aggressively the TSA agent told me my options. This may sound like whining, but I've never had anyone talk to me like that. I asked if there was anyone else I could talk to and she said no. Not wanting to create a scene, or be taken away by the TSA to be questioned, I left the gate and reentered the security line.
I started talking to the person next to me in the security line and explained the situation, and for some reason, the TSA agent came over and basically yelled at me to empty my water bottle. I hadn't even gotten to the trashcan to empty my water bottle. And it is entirely unnecessary for a TSA agent to scold a passenger. At this point, I felt relatively shaken up by the whole ordeal. In the grand scheme of things, it wasn't a huge deal, but, man, I really hated being basically yelled at in front of everyone and having the TSA agent go out of her way to yell at me in line again.
I should have filed a complaint, but it seemed pointless to do.