This Court's function as a reviewing court is to ultimately ensure that the magistrate or lower court had a "substantial basis" to determine that probable cause existed. It is critical in our review, however, that a magistrate's determination that probable cause exists be paid great deference and every reasonable inference possible be drawn to support that determination. State v. Reesman, 2000 MT 243, ¶ 19, 301 Mont. 408, 10 P.3d 83 (overruled on other grounds by State v. Barnaby, 2006 MT 203, ¶ 42, 333 Mont. 220, 142 P.3d 809).