The Longmont Airshow and Expo will make a comeback at Vance Brand Airport on Sept. 14 after a six-year hiatus. The free air show is set for 11 a.m. to 1 p.m. and will feature flyovers from aircraft and performance teams. The expo will be open from 7 a.m. to 5 p.m. and will include an early-morning pancake breakfast, historic and military aircraft displays, interactive educational booths and hands-on demonstrations provided by St. Vrain Valley Schools’ Innovation Center, Metropolitan State University – Denver, local flight schools and the federal air traffic control team based in Longmont.