Another "late" entry:
Tsutomu Yamaguchi
Haven't heard of him? Neither had I until I heard about him on the
SGU. Tsutomu Yamaguchi was on a business trip in Hiroshima on Aug 6, 1945. In case you don't remember that date, it's when we dropped the first atomic bomb. However, he survived and returned to his home in Nagasaki a few days later,
just in time for the second bomb to be dropped—and he survived that as well!. He is the only person to be officially recognized by the Japanese government as surviving both explosions. He passed away at the age of 93 last January.