LaGuardia is changing security checkpoints at the airport beginning today—there will now be three separate lines in an attempt to isolate the dumbasses who still have yet to realize that you need to take your shoes off: "A green circle for families with small children and strollers, groups, people needing special assistance and those new to flying; a blue square for casual travelers who are familiar with security checkpoint procedures and have multiple carry-on bags; and a black diamond for expert travelers who are well-versed in the procedures." [NYT]