It is well-known that the White House has anti-aircraft missiles available should a terrorist aircraft threaten to attack. I wonder if the administration has ever considered the fall-out should a missile go astray and hit a school or a hospital, or even if a successfully targeted plane (full of American citizens) should crash into a residential neighborhood.

D.C. and specifically the White House are protected by overlapping security systems. Secret Service has MANPADS, MGs, and .50 Cals. On the roof is a fixed Avenger turret and also NASAMS missile launchers (a variant of the AMRAAM for Surface to Air made by Norway). Nearby buildings also have them as well as ready to go armed F-16 s and Black Helos with gun and missile systems. Modified APCs nicknamed Rhinos are also nearby to use against heavy ground assault. And believe it or not, the Vatican is even more protected inside with all sorts of small arms, missiles, explosives, and armed separate Group to repel invaders. The Swiss Guards also cross train with Euro and US SFs and have automatic weapons within easy reach, so don't be fooled by the funny looking costumes and pikes. The Vatican also has its own police force for Vatican City and an intelligence gathering force. Some say they are the world's best spy force that operates around the globe with the Catholic Church as perfect cover. Angela Merkel also deceptively has a bunker in case of strategic emergency. KSK would remove her from Berlin and move her to an undisclosed buried facility suspected to be in Thuringia. And the rumors persist of Nazi bunkers in Berlin modified for not only Cold War duties but still operating. Out of 1000, only 300 were ever fully explored, or 30%.. The Soviets, of course, used many Nazi bunkers in what was E Germany...