Casey Sheahan, who had announced his retirement last month after one year as president of Keen Footwear, is going back into active duty as chief executive of Simms Fishing Products, while that company's president and majority owner, K.C. Walsh, will become executive board chairman. Sheahan served as president of Patagonia between 2005 and 2014 before a previous retirement, which was intended for him to spend more time with his family.