Oscar for Best Color Cinematography in 1950
according to TMC's Robert Osborne, "the lightning bolts in Monument Valley are real and one of the reasons the cinematographer Winton C. Hoch went on to win the Oscar for Best Color Cinematography in 1950."
"When the storm rolled in over the horizon the film crew started packing up their gear to make a fast exit but Ford said "hey don't stop, keep shooting." Hoch did but was furious, with the lightning and all Hoch felt Ford was putting the crew in harm's way. Hoch even reported the incident to the cinematographer's union."
"We deal in lead, friend."