Simplify the following text for a Grade 6 native English-speaking person.
Original: Ken Hitchcock ( born December 17 , 1951 in Edmonton , Alberta ) also known as `` Hitch '' is an NHL hockey coach and pro scout , and former head coach of the Dallas Stars , Philadelphia Flyers and most recently Columbus Blue Jackets .
Simplified: Ken Hitchcock ( born December 17 , 1951 in Edmonton , Alberta ) is a NHL ice hockey coach . He coaches the Columbus Blue Jackets .