By KIRSTEN GRIESHABER, Associated Press BERLIN (AP) — The first keg was tapped, and the beer started flowing as the 186th Oktoberfest got underway Saturday in the southern German city of Munich. Mayor Dieter Reiter inserted the tap in the first keg with two blows of a hammer and the cry of "O'zapt is" — "it's tapped." As tradition demands, he handed the first mug to Bavarian governor Markus Soeder.