The California airline pilot punished by the Transportation Security Administration for posting videos critical of airport security has revealed his identity. Chris Liu, who calls himself the "Patriot Pilot," says he was just trying to improve airport security when he released a recorded and posted online footage of San Francisco International Airport in which he criticized a number of procedures. Liu had been part of a federal security program allowing him to carry a gun in the cockpit. But after he posted the video, federal agents showed up at his house Dec. 2 to confiscate his weapon and suspend his...