Oh, Michael J. <br/><br/>
Knock knock who's there?:  9th circuit court of appeals provides guidance on knock- and announce rule/ 

 - USA:  International  Association of Chiefs of Police,  2016 
 - page 16 
 - Vol. 83 No. 7 ( July 2016 ) 
 - The Police Chief  page 16  Volume 83 Number 7  0032-2571 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rules of court
<br/><br/><label>Dewey Class. No.: </label>BPer. 363.02  / P758