[Bell UH-1H Iroquois helicopter on approach]

Photograph of a Bell UH-1H Iroquois (Huey) helicopter of the 240th Assault Helicopter Company, approaching a landing zone in a forested area of Vietnam, circa 1970-1971. A red smoke signal marks the landing zone. The photo was taken from another Bell UH-1H helicopter during an air assault.

Caption from donor: "Smoke dropped from the command and control aircraft on where troops the ground commander want us to land. Sometimes, the commander on the ground will pop the smoke."