Photo essay: Exercise Red Flag Published March 7, 2011 By Tech. Sgt. Michael R. Holzworth 99th Air Base Wing Public Affairs NELLIS AIR FORCE BASE, Nev. (AFNS) -- Members of the Michigan Air National Guard participate in exercise Red Flag here Feb. 24. The exercise is a realistic combat training exercise involving the air forces of the U.S. and its allies. View the sideshow.