The following excerpt is from U.S. v. Kalustian, 529 F.2d 585 (9th Cir. 1975):
Mere conclusions by the affiant are insufficient to justify a search warrant, Aguilar v. Texas, 378 U.S. 108, 84 S.Ct. 1509, 12 L.Ed.2d 723 (1964), or a wiretap order. More specifically, they do not provide facts from which a detached judge or magistrate can determine whether other alternative investigative procedures exist as a viable alternative.
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