Gov Walter J Kohler of Wisconsin & other civil defense observers walk along the deck of the USS Mt McKinley while waiting to move in toward Little Namu Island in the Pacific and the explosion of the H-bomb. L-to-R: Gen Donald E Carleton, civil defense director, Milwaukee; Wilbur B Pettigrew, civil defense director, Battle Creek, Michigan; Gov Kohler and Marvin Smith, CD director, Jefferson City Mo. The bomb now is scheduled to be set off Tuesday.

Photo is dated 1956.

Photo measures 10 x 8.25 inches.