tion of municipal police); lea Castings:1a, 578 F.741 842. 845 (9th Clr.1978) immediate controversy on discovery until prose- cution had commenced); Milted Smuts v. Chan. en, 549 Ficl 1306, 1313 (9th Cir.) (Prosecutoes choice of evidence to present to grand Jury). eert. denied, 434 US 825. 98 SQ. 72, 54 LEdld 83 (