An AC-130H/U Gunship aircraft jettisons flares. An AC-130H/U Gunship aircraft from the 4th Special Operation Squadron jettisons flares over an area near Hurlburt Field, Fla., on Aug. 20, 2008. The flares are used as a countermeasure to heat-seeking missiles that can track aircraft during real-world missions. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 245921-O-ZNK08-911.jpg Photo Gallery