William Hopper.
The guy in the back row, the one with the expanded pic at bottom, is former Petty Officer and UDT team 10 member William Hopper.
A navy SEAL before there were navy SEALs. Fiv ops in the Pacific, including Leyte, and a member of the planning team for the assault on Japan… which thankfully never happened, made moot by the atomic bomb.
William DeWolfe Hopper, known elsewhere as Perry Mason’s favorite private detective, the intimidating Paul Drake.
The pic with his mother? She is famed Hollywood gossip columnist Hedda Hopper….