On my visit, they showed it to me.
Wow! A personal book of history of Israel and Diaspora Jewry.
A shiny vanilla building in the once-new Hatikvah neighborhood took center stage of one photo. "I built that building with my two hands when I was 17." Since then he's built, shuls (synagogues) and shopping centers and colleges.
There was a photo of Sabi in an Israeli Army uniform. "Oh, yes, here I am in the Haganah (Pre-State Israeli Army). I was the commander of equipment upgrading."
That's a wierd thing to be commander of. "Well, Israel in 1948 could not get weapons from too many places, and what they could afford was usually reject-grade equipment, so I made it Grade A."
He took guns with broken sites and realigned them, binoculars with blurry glass and refocused them, etc. etc.
Sabi fought the war, married and raised a family, started a profession and gave years of his life to his synagogue, his community, and the Jewish people.
He doesn't wear a uniform anymore, but he still looks like a hero to me.
Beware the grandfather/grandmother you see walking slowly down the street. S/he might be a hero too.