Well, after reading a few comments from fellow FTers, I decided not to take off my shoes at terminal 1 at SMF. The "agent" was REALLY rude to me when I stood up and told him that I didn't have to take my shoes off. He told me that I would go through secondary if I didn't. Since I was late for my flight, I decided to let them win this time. But someone behind me heard what I said and didn't take off his shoes! He went through secondary and everything, but didn't get a complaint form. I stood around for a bit to talk to him about the TSA. Luckily we were on the same flight, so we talked a lot that has been spoken here. I told him about this site and hopefully he'll read this!