You can't possibly profile because just about everyone who rides the subway or bus looks suspicious (except for me, of course). And if you narrowed your search profile to Middle Eastern or Paki men under the age of 40 carrying a bag of some sort, you would still have to search a million people every day. And I don't think I've had a cab driver in the last five years who's name isn't Isham or Muhammad, and so while the cops are searching MTA riders, Mo pulls up in front of Grand Central Station at 8:30 a.m. in his yellow medallion cab packed with explosives and yells, "Ali Akbar" just before he wipes out a couple of hundred people
We best be gettin our bomb-sniffing dogs sniffin all day and breedin all night. ;-)