The Medal of Honor could also be received for actions that happened in peacetime, such as conflicts in which the United States is neutral as well as non-combat related incidents outside the warzone. 209 military personnel earned the medal in this way. 15 United States Navy sailors and a United States Marine were awarded for actions against "opposing foreign force(s)" (a different term than "enemy" which applies between two or more parties engaged in war) during the attacks on Pearl Harbor and Midway by the Japanese respectively on December 7, 1941. Most of these medals were presented to members of the United States Navy for rescuing or attempting to rescue someone from drowning. One of those awarded the Medal of Honor for rescuing others was Fireman Second Class Trinidad, who as of 2010 has been the only Asian American Sailor to be awarded the Medal of Honor. In addition to the medals that were presented for lifesaving acts, one Medal of Honor was presented to William Halford who sailed in a small boat for 31 days to get help for the other members of the USS "Saginaw" who had been stranded on an island. Three explorers were also presented with the medal by special acts of Congress. Charles Lindbergh received the medal for flying the first solo non-stop flight across the Atlantic Ocean as well as Floyd Bennett and Richard Evelyn Byrd who received it for their participation in what was thought to be the first successful heavier-than-air flight to the North Pole and back. One recipient, Adolphus W. Greely received his for a lifetime of military service.