I frequently fly on aa out of D gate (at lga), most often on a Friday. The lines have never been very long, for both regular flyers and fc. However, at around 6 am, Hudson News, bring in their magazines, newspapers and other items for their concessions--they monopolize an entire security line; my guess is the same thing happens at the other terminals. At JFK they no longer look at the bp after you go through the metal detector.