Marine Sgt . Michael Strank was among six who famously raised flag on Iwo Jima . The U.S. military has been conducting a series of exercises in the Pacific Ocean off Hawaii since late last year to test its ability to respond quickly and effectively if North Korea launches an attack against one or Strank , killed on Iwo Jima in World War II battle , did n't receive citizenship papers . Certificate given to his sister on Tuesday .
Marine Sgt . Michael Strank was among six who famously raised flag on Iwo Jima . Strank , born in Czechoslovakia , became a U.S. citizen after his father was naturalized . Strank , killed on Iwo Jima in World War II battle , did n't receive citizenship papers . Certificate given to his sister on Tuesday .