When Jaeson Parsons went to Iraq as a combat medic, he was based in a particularly dangerous place in the desert. Inside a building, he stumbled on some graffiti - an image of a lighthouse that another American soldier left on a concrete wall. Jaeson recalls the words alongside the painting: "From sea to shining sea." In part to cope with his post-traumatic stress disorder, Jaeson travelled back to Iraq to collect images of the art. He has collected more than 10,000.