The South Dakota State University chapter of Engineers Without Borders is hosting a screening of the film "La Source" on Friday evening in Agricultural Hall in Brookings. The screening is free. "La Source" is narrated by Oscar-nominated actor Don Cheadle. It documents the story of Josue Lajeunesse, a Princeton janitor who returns to Haiti after the 2010 earthquake to help bring what is most fundamental to his village's survival: clean water. In 2012, "La Source" was nominated for the Social Impact Award at the AFI-Discovery Channel Silverdocs Documentary Festival. SDSU students and Engineers Without Borders members Greg Tanner and Deidre Beck joined Karl Gehrke on Wednesday.