On Mount Everest, a fistfight allegedly broke out near Camp Three, between climbers and Sherpas. This file photo shows the view from Camp Three at 24,000 feet on the mountain's Lhotse Face. Courtesy of Alan Arnette/AP hide caption

itoggle caption Courtesy of Alan Arnette/AP

Eric Fisher, offensive tackle from Central Michigan, was the No. 1 pick in the 2013 NFL draft. He was chosen by the Kansas City Chiefs. Rich Kane /UPI /Landov hide caption

itoggle caption Rich Kane /UPI /Landov

Connecticut center Stefanie Dolson hugs teammate Caroline Doty (No. 5) after the Huskies' win Monday night over Kentucky at Webster Bank Arena in Bridgeport, Conn. Cloe Poisson/Hartford Courant/MCT /Landov hide caption

itoggle caption Cloe Poisson/Hartford Courant/MCT /Landov

Robert Monges, a coach for James Lick High School, checks tight end Dominic Brewster for a concussion during a football game played in Morgan Hill, Calif., in 2006. Patrick Tehan/San Jose Mercury News/MCT/Landov hide caption

itoggle caption Patrick Tehan/San Jose Mercury News/MCT/Landov

Randy Moss of the 49ers glides down the field, under an arcing football, on his way to a touchdown against the Patriots on December 16, 2012. Jared Wickerham/Getty Images hide caption

itoggle caption Jared Wickerham/Getty Images

Linebacker Ray Lewis announced Wednesday that he will retire after the Baltimore Ravens' season ends. Most media coverage of Lewis' legacy has omitted his part in a 2000 double-homicide case. Harry How/Getty Images hide caption

itoggle caption Harry How/Getty Images

Dr. Ann McKee, professor of neurology and pathology of Boston University School of Medicine and co-director of the Veterans Affairs Center for the Study of Traumatic Encephalopathy, inspects a brain in the Bedford Veteran Medical Center last year. Stan Grossfeld/Boston Globe via Getty Images hide caption

itoggle caption Stan Grossfeld/Boston Globe via Getty Images