Yesterday, when I arrived at EWR Terminal C, I noticed that it is possible to look into the MMW Peep Show booth near the C120-129 gates. So, I took a quick video: Inside the TSA EWR Terminal C MMW Peep Show Booth. While the booth was unoccupied, it appears that an image remained on the screen. After I grabbed the video, I decided to get some photos of the booth itself and the signage on the door. Doing so caused the screeners to freak out and shut down the MMW machine. EWR Terminal C TSA MMW Viewing Booth by marklyon, on Flickr EWR Terminal C TSA MMW and Viewing Booth by marklyon, on Flickr EWR Terminal C TSA Image Operator Room - the "MMW Peep Booth" by marklyon, on Flickr I was told not to film, but I refused to stop. I was then politely asked not to film the screens. I decided to move to the next checkpoint and was again harassed for photographing people actually going through the MMW machine at that location. I decided I'd gotten the photos I wanted and went to my gate. Only to find that my flight was delayed by four hours. I grabbed a cart and asked to be rushed over to the gate where another flight to my destination would leave in 15 minutes. As we passed a checkpoint, sky marshal Jeffrey Stalker and screening manager Thomas Willoughby stopped me. They showed badges and demanded that I show the photos from my phone. I protested, but having deleted the ones I already posted online, showed them the nine remaining photos on my phone (of people in the MMW from the second machine). They refused to provide any rule against photography and instead said I was stopped for "actions out of the ordinary".