F. Herrera.VietnamPhoto.195203 (2)

Sgt. Fernando Herrera (left) takes a 15-minute break from military duties with fellow soldiers at base camp in Vietnam, circa 1968. Photo courtesy of Sgt. Fernando Herrera.

Sgt. Fernando Herrera (left) takes a 15-minute break from military duties with fellow soldiers at base camp in Vietnam, circa 1968. Photo courtesy of Sgt. Fernando Herrera.

Sgt. Fernando Herrera (left) takes a 15-minute break from military duties with fellow soldiers at base camp in Vietnam, circa 1968. Photo courtesy of Sgt. Fernando Herrera.