A SAS patrol lets off red smoke during a 'hot extraction' in South Vietnam, circa 1971. The patrol would have used red smoke to identify themselves and guide the helicopters to their location.
Reference
Image courtesy of Brian Senn
How to cite this page: '
Red smoke guides helicopters - SAS 'hot extraction'
', URL: https://vietnamwar.govt.nz/photo/red-smoke-guides-helicopters-sas-hot-extraction, (Ministry for Culture and Heritage), updated 28-Apr-2011