Uncle Jesse:

The first shot fired on December 7th 1941 was the USS Ward (DD-139) that was commissioned 24 July 1918 and recommissioned January 15 1941. The USS Ward was protecting the entrance to Pearl Harbor when it spotted a Japanese midge submarine trailing another navel ship through the nets laid across the entrance to Pearl Harbor.

The forward 100-mm gun (gun #1) fired at the midge submarine and missed, the rear port side 100-mm gun (gun #3) fired and hit the conning tower of the midge submarine.

This japanese midge submarine sank but could not be located until it was found in only in recent years.

Gun #3 now sits in St. Paul Minnesota Capital Grounds, donated for Minnesota's Centennial in 1958, the gun was removed from the Ward when she was converted into high speed transport, for the invasion of Leyte The crew of the USS Ward at Pearl Harbor were members of the Minnesota Naval Reserves.

http://en.wikipedia.org/wiki/USS_Ward_(DD-139)

The USS Ward was hit by Kamikaze planes and Japanese bombs on December 7th 1944 at Leyte, the fires could not be control and the order was given to abandon ship. The USS O'Brien was ordered to sink the Ward because it was a navigational hazard to other ships in the area.

The Commander of the USS O'Brien was William W. Outerbridge, who on December 7th 1941 was the commander of the USS Ward at the entrance to Pearl Harbor.