 Here are three big things you need to know. Three. Happening this evening, Marching Music's Major League comes to town. Drum Corps International's Drums of Summer competition taking place at Tiger Stadium in Broken Arrow with a delayed start time of 8 o'clock due to the heat. Two. Happening now, 3,400 law enforcers from all over the country are helping with security at the Republican National Convention, and that includes 28 officers from the TPD. Three.