SHAW AIR FORCE BASE, S.C. -- Make plans now to attend this year’s Jammin’ July 4th Celebration, Sunday, July 4, at Dillon Park in Sumter! The event is hosted by the 20th Fighter Wing in cooperation with the City of Sumter. Jammin' July 4th Celebration by Public Affairs 20th Fighter Wing 6/21/2010 - SHAW AIR FORCE BASE, S.C. -- The 20th Fighter Wing and the City of Sumter are hosting the annual Jammin' July 4th Celebration from 5  to 11 p.m. July 4 at Dillon Park in Sumter, S.C. Admission is free! Beverages and food will be available for purchase. Enjoy fireworks, rides and live entertainment provided by the U.S. Air Force Heritage of America Band, The Blue Aces. A free shuttle will run from the Sumter Mall parking lots to the park. No pets or coolers allowed. For more information, visit www.20thfss.com.