EDMONTON - A young Edmonton man who grievously wounded his friend while testing a supposedly “stab-proof” vest was sentenced to six months in jail Tuesday. Court heard that Justin Harder, 18, was bragging to his friend Calvin Wesley Clackson, 21 about a “stab-proof” vest he’d just acquired as they hung out in an apartment suite at 106th Avenue and 116th Street, Crown prosecutor Mark Huyser-Wierenga told court. Harder was so confident in the vest that night in October 2012 that he believed it would deflect any attack with a knife. Harder eagerly invited his friend to stab him in the...