While the so-called terror “expert” talking heads fill cable news with facts and fictions, it is growingly clear that U.S. Homeland Security is learning from the incident and adjusting its Watch and Do-not-fly lists to make them more usefully integrated as well as working more closely with foreign governments and their airport security operations. It’s also a fairly sure bet that passengers will see more “puffer” machines, sniffing dogs and TSA workers swabbing at U.S. security portals. It is not as clear with full-body scanners, even though Wall Street has given the company that makes them a stock boost just after the holiday incident.