For over twenty years, Louis Hock has produced documentary films, gallery installations and public art that examines the Mexican and United States border. Focusing on issues such as undocumented migration, assimilation and the valuation of labor, his work explores perception of the cultural divide. His Nightscope Series (1985-2003) uses thermal-imaging technology to site the nighttime border crossers’ radiant forms in scope crosshairs, realizing both the illegal crossers’ vulnerability and the furtive attempts of border patrol officers to capture them.