The aviation world, and the Twin Commander community have lost two of their brightest stars. Robert A. “Bob” Hoover, who Jimmy Doolittle called the best stick-and-rudder pilot who ever lived, and Arnold Palmer, perhaps the world’s best-known owner-pilot, each had a special relationship with Twin Commanders. Palmer flew two different models of Aero Commanders early in his career as a professional golfer, and Hoover, of course, thrilled airshow audiences for years with his precision aerobatic performances flown in his virtually stock Shrike Commander. A PILOT WHO GOLFED Arnold Palmer, who once said he probably would have been a professional pilot if he hadn’t succeeded so spectacularly in golf, grew up about a mile from the airport in Latrobe, Pennsylvania, and…