One anonymous tip and one named tip sufficed for the search of the deft, given that the location was known to be the type of bar where people might drink with concealed weapons.
Court's instruction to counsel to consider why a caucasian person might have brought a gun to a predominantly african-american bar was egregious, but it didn't taint the proceeding, as the tips could still be weighed, and argument wasn't impeded.
http://www.ca4.uscourts.gov/opinions/174536.P.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.