www.globalsecurity.org/military/ops/red-flag.htm
www.airforcemag.com/red-flag-21-1-readying-airmen-guardians-for-great-power-competition/
www.si.edu/content/SE/SOLs/Fighter_Pilot_Standards.pdf
https://en.wikipedia.org/wiki/Exercise_Red_Flag
https://en.wikipedia.org/wiki/Fighter_Pilot:_Operation_Red_Flag