The Roberta Bondar Pavilion is the site for the 2015 edition of the Sault Ste. Marie Walk for Muscular Dystrophy.  The event starts on Saturday with registration at 10:00 a.m. and the walk, wheel and roll going on at 11:00 a.m.  Muscular Dystrophy is a group of progressive muscle disorders that weaken the muscles that control body movement.  As a result, people are unable to walk, speak or breathe — the disease can even be fatal.