I recently purchased a Japanese type 90 steel helmet that was sent back to the U.S. by a Navy CB. The helmet has been painted in CB fashion and was returned to the States in its custom field made box. The serviceman placed a number of address labels on the box and stapled postage stamps to the outside in order to guarantee postage home. The Navy man's labels read: R.L. Hubbard, CM2c, 17th. NCBat. USN, CC: A3, %F.P.O., San Francisco, CA The family stated that the relative did not survive the war and they believed that he was KIA on Okinawa. The 17th did appear to serve on both Iwo Jima and Okinawa. I have access to the standard internet only and have been unable to find anything other than the 17th CB's unit history. Any help or confirmation on this sailor and/or his service record would be most appreciated.