紅旗演習是每年都有而且依照訓練科目長短而有不同梯次參與國家及觀察國也是每次都不一... 2001 the annual(每年一次) Red Flag exercise brought in more than 7,000 participants and 120 aircraft from U.S military and allied air forces from Spain, Singapore, Germany, France and the United Kingdom March 3 to April 13. Red Flag is divided into three periods lasting two weeks each. Allied aircraft flying in the first period include GR-7 Harriers from the United Kingdom; EF-18 Hornets from Spain, Tornados from Germany; and F-16 Fighting Falcons from Singapore. United States forces included F-16s, F-15 Eagles, B-52 Stratofortresses, E-3 Sentries and KC-135 Stratotankers. Allied aircraft during the second period included GR-4 Tornados from the Royal Air Force; Mirage 2000s from the French air force; and Tornados from the German air force. United States forces will included A-10 Thunderbolts, F-16s, EA-6 Prowlers, E-3s and KC-135s. During the final period of Red Flag, March 31 to April 14, allied participation continued to include Tornados from the United Kingdom and Germany, and the Mirage 2000 from France. United States aircraft continued to include B-52s, F-16s, E-3s, and F-15C's and KC-135s. All three periods included various cargo and support aircraft as well as helicopters.