Transportation Security Administration officials grabbed Daniel Brown at Los Angeles International Airport and dragged him off for interrogation, causing him to miss his flight. Brown was part of a group of U.S. Marines—all in uniform and carrying military ID's and travel orders. But TSA officials say Brown had been placed on the agency's no-fly list earlier after agents detected gunpowder on his boots on a previous flight. That's Brown's combat boots. That previous flight was after his return from combat in Iraq. This time, Brown was eventually cleared to catch a later flight to Minneapolis-St. Paul, where he found his fellow Marines waiting for him.