The 4th Annual Red, White and Blueberry Jamboree will be held on Saturday, May 18 from 10 a.m. until 2 p.m. on the St. John’s Herr Estate (a Luthercare community) campus, 200 Luther Lane, Columbia. Again, it will feature a 300-pound blueberry pie. At 12 p.m., WGAL’s Jack Hubley will do a special presentation. Fun activities include games for children, face painting, a dunk tank and moon bounce, as well as live music. The celebration will have a pie eating contest, the Turkey Hill Cow, the Columbia Consolidated Fire Department, the National Watch and Clock Museum and the Brush.