Sebastião Salgado says:
I was in Kuwait in 1991. The first Gulf war had just finished, but the oil wells were still burning. To get into the country, I had to go to Saudi Arabia and hire a four-wheel drive the colour of the sand – because that was the colour of the US army vehicles. Then, to cross the border, someone told me to find a card in the same sort of colours as a US army ID card and wave it upside-down. Nobody stopped me, and I got through.