You can be pretty sure that when those two lost pilots in a little Cessna wandered out of Pennsylvania and into highly restricted air space near the Capitol and the White House last week, it wasn’t just F-16 fighter jets and Blackhawk helicopters that were prepared to end their journey. Government men in black likely were posted atop key buildings with shoulder-fired missiles as well. Such weaponry has been part of the US arsenal for decades. But just as many “bad guys” as “good guys” may be armed with MANPADS (man-portable air defense systems) these days, and some experts say that it would be far too easy for one of them to attack an American airliner. As a result, diplomats and engineers are scrambling to reduce the threat.Full Story