During the Russian-Afghani war, which lasted from 1979 to 1989, hundreds, if not thousands of shoulder fired “Stinger” missiles were supplied to the Taliban by the American CIA. They were a primary reason that Russia finally withdrew from that conflict. It allowed primitive, frequently illiterate tribesmen to shoot down complex military aircraft. Due to the proliferation of military conflicts in the Middle East since 2001, their are at the very least hundreds of shoulder fired missiles in the hands of some very bad people. With our porous southern border, it is not impossible that some of those missiles have already been smuggled across that border into our country by radical Islamists. In fact there is compelling evidence that they have been. There is no better way for these people to strike fear into the hearts of Americans than to disrupt our transportation system, specifically our airline industry. I can think of no better way to do that than to use one of these Stinger type missiles to shoot down airliners in the supposedly “safe” American heartland. Since they are deadly up to altitudes of at least 11,000′ above the terrain, it would be simple to create havoc by shooting down an airliner full of innocent people shortly after takeoff or before landing, when they are moving relatively slowly, and only a few thousand feet off the ground. At just short of six feet in length, the Stinger is certainly not a “concealable” weapon, but it could easily be carried in the back seat of a mid sized car covered by a blanket. The perpetrator would merely have to park in the vicinity of an airport on a clear day and on the extended centerline of an active runway. As the aircraft came into view, the missile would be shouldered, aimed and fired. It is a “fire and forget” heat seeking weapon. No further action is required. These actions would take less than a minute, and potentially, hundreds of lives would be lost. The effect on the traveling public, especially if multiple such events occurred over several days, can easily be imagined. This is a very real scenario, and a clear and present danger to our nation. Our present administration seems blind to this and other potential threats we face. For the safety of our citizens this must come to an end, and quickly.