Lt. Cmdr. James Anderson, who distinguished himself in a 1981 dogfight over the Mediterranean Sea during which two Libyan jets were shot down, died Saturday in a skiing accident in Aspen, Colo., at age 37. Anderson was a radar intercept officer navigating one of two F-14s that were fired upon by two Soviet-made Libyan fighter planes Aug. 19, 1981. A Libyan missile missed and the Navy fliers returned fire. He was a member of the Navy's elite Black Aces squadron and was on a routine mission at the time.