 Of a total of 345 Puerto Ricans who died in combat, 18 were listed as MIA's.They were all members of the Army with the exceptions of First Lieutenant Jose Hector Ortiz who was the only Puerto Rican MIA member of the United States Air Force and PFC Jose R. Sanchez who was a member of the United States Marine Corps.Of the 18 Puerto Rican MIA's, PFC.