The two thugs in the Riverside alleyway bust open the handbags they'd snatched over the evening. “That's gotta be over 300 bucks, Bill!†crowed one of them, stuffing the cash into his pockets.   “Yeah, keep it down!†hissed the other, “You know how them supers are always crawling about, George. I'm sure I heard something overhead.†  “Damn right you did,†came a voice from above. The two thugs glanced up to see a green airship floating above them with