Well, THIS explains a lot!

[flygirl]

http://online.wsj.com/article/SB122211987961064719.html?mod=yhoofront
Make sure you check out the interactive map. It's slow to load. Marylanders, be patient.

[BAmaracas]

Very nice, I like maps. I'm from Maryland and I can't stand waiting in line for anything, but I don't see how this shown on the maps.