The following excerpt is from U.S. v. Crowell, 12 F.3d 1109 (9th Cir. 1993):
Implicit in this provision is the requirement that the officer wait a reasonable period of time after the announcement to give the occupants a chance to grant or refuse admittance. The amount of time that is reasonable depends upon the circumstances of each case. United States v. McConney, 728 F.2d 1195, 1206 (9th Cir.) (en banc ), cert. denied, 469 U.S. 824 (1984).
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