mps londons metropolitan police service nbc nuclear , biological , chemical pbs public broadcasting service , publicly supported non-commercial television station in the us rehypothecation the practice of pledging one asset as collateral for multiple deals ; daisy-chained or quantum collateral sad special activities division , cias covert paramilitary unit september 17 date occupy wall street started in new york city siff successor identification friend or foe , the uk version of iff , not originally fully interoperable with iff about the author i.c .