Personally, I think that having maps of the US creates an unbearable risk to our future.
Think of it, any terrorist can walk down to the store, buy a guide that shows EXACTLY where various infrastructure items like roads, gas stations, federal buildings, etc are! My god, they can even find LIBRARIES on these maps, and a Library is just another word for 'commie liberal instructions for building bombs'-place.
Not only that, but let's step back another level and look at the highway system. There are big 'H' signs on the freeway where I live that POINT YOU TO HOSPITALS! Terrorists could slaughter THOUSANDS just by targetting a building full of people who are already weakened (probably by oppressing others around the world) people, not to mention lines of PURE OXYGEN! Get rid of the 'H' signs and cloak hospitals as business towers and malls so that the terorrists can't target them.
Another thing that disturbs me is the whole '911' concept. Since this number is well known, there's nothing to stop terrorists from launching denial of service attacks against our emergency responders! One house full of liberty hating terrorists could tie up police and fire departments for hours, the result of which could be block after block of burned buildings because normal house fires BLAZED OUT OF CONTROL! Why? Because Johnny Firefighter was trying to deal with a HUNDRED fake fires when one REAL fire was spreading!
Aaaarrgh! I can't take it any more! First they're reading the airplane manuals, then they're plotting with maps, finally they're DESTROYING AMERICA by using our infrastructure against itself!
If you don't object to this obvious terrorist threat of airplane manuals becoming available, then you JUST DON'T GET IT! If you don't report this to the FBI, then you're DRIVING WITH BIN LADEN!