Santiago Cañón-Valencia, 18, from Dallas, TX practices before his performance in the senior division of the Sphinx Competition on Thursday, Feb. 20, 2014 at Orchestra Hall in Detroit. Tim Galloway or Al Jazeera America.
Paris Burg, 6, of Detroit, sits at a laptop in the classroom for her online reading tutoring on Thursday, Nov. 7, 2013 at Chrysler Elementary School in Detroit. Tim Galloway/Special to DFP
GORUCK Challenge Class 771 on Saturday, September 14, 2014 in Ann Arbor.