He’s proof that no man’s left behind. The remains of a World War II-era US fighter pilot who disappeared while on a daring raid in Asia were recently discovered in a field in Thailand 80 years after he went missing, thanks to the work of a group of dogged sleuths. First Lt. Franklin McKinney, a member of the famous all-volunteer American “Flying Tigers” squadron, was last seen taking off from Beitan Airfield in Yunnan, China on Nov. 5, 1944. Though McKinney was pronounced dead by the military in March 1946 – two years after failing to return from a dangerous assignment in November 1944, the plane wreck and his remains were never located by military authorities. 1st Lt. Franklin McKinney, a member of the famous all-volunteer American “Flying Tigers” squadron, was last seen taking off from B