In this photo taken March 28, 2014, Ben Loh, a Ph.D. student from Oklahoma State University, works at a demonstration booth during a drone summit at Northeastern State University in Broken Arrow, Okla. (AP Photo/Tulsa World, Matt Barnard) ONLINE OUT; KOTV OUT; KJRH OUT; KTUL OUT; KOKI OUT; KQCW OUT; KDOR OUT; TULSA OUT; TULSA ONLINE OUT
Featured Photo Galleries
