what are all of the categories?
rocket-powered aircraft, manned air-breathing craft, propeller-driven aircraft, piston-engined propeller-driven aircraft, helicopter, glider (sailplane), human-powered aircraft
what are the speed totals under mph?
4,510, 2,194, 541, 528.33, 249.1, 190.6, 19.8
which total is highest?
4,510
which category corresponds to that number?
rocket-powered aircraft