While everyone's focusing on New York and DC, Vegas would seem a logical place for a hit. They probably view it as the infidel capital of the US. Several weeks ago Zubidah warned of a 4th of July attack and intelligence on Padilla's conversations indicated that hotels and gas stations would be targeted. That's a big vacation week, lots of celebrations going on and plenty of hotels in Vegas - also many vacationers on the roads.
more likely they were there to drink the free whisky and get laid.
p.s. interesting that yahoo can display full text version of NY Times piece, while FR can't???
Yeah, but they'd have a heck of a time finding 49 virgins in the entire city. No wonder they're hoping for the afterlife.