In your posting of 3 March of this year, you refer to a James T. Mahoney, service number 7 040 262, U. S. Army, a member of 136th Infantry, 33rd Infantry Division who is accredited to Kentucky.
This man died - accidental death or natural causes - in the Philippines 19 July 1945 and is buried in the American Battle Monuments Commission Manila Cemetery at Fort Bonafacio, Luzon, Philippines. He would not have served at Iwo Jima.
His deceased file may contain the cause and exact locale of his death. You'll find instructions on how to order at message #2112 (go back to the Main Page, enter "2112" in the box in the upper right corner marked "Jump to #_____" then click on "Go").