I have no idea as I took this picture from a distance while waiting for the tram to the airside terminal. This is the main checkpoint at PIT, and I am always over on the far left side of that picture (you can see a second backscatter/WTMD pair over there). The elite line feeds into the WTMD usually, and it provides good opportunities for a SDOO as long as the moat dragons aren't ushering everyone into the backscatters, which happened today. There was actually another FT member who had a successful SDOO shortly before I traversed the checkpoint, but I wasn't so lucky.