Carl Jean Johnson (July 2, 1929 – December 29, 1988) was a public health physician who opposed nuclear testing.

He began a strict weightlifting regimen and developed proper eating habits that allowed him to overcome his physical weakness.

It was largely an uneventful tour of duty, with the exception of while surveying the island's jungles he found a wrecked bomber from World War II that still had the pilot's remains inside.

He reported that soil around the Rocky Flats Nuclear Weapons Plant contained 44 times more plutonium than the government claimed.

[1][3] Johnson died on December 29, 1988, at Lutheran Memorial Hospital in Lakewood, Colorado, of complications following coronary bypass surgery.