Nobody in Manhattan is having a particularly swell seventh of August this year. It's way too hot, the subways are running late...and then, just before nine in the morning, a heavily-armed, well-organized militia descends upon the city with guns, explosives, and a seemingly indiscriminate bloodlust. Not a swell day to be a New Yorker, to say the least...but an especially un-swell day to be Jairzinho Navias.That's not just because Jairzinho's having...