The youngest participant of the Pearl Harbor invasion would be 99 years old.
The youngest World War II veteran would be 94. I just found this from a website promoting a Word War II museum.
“according to US Department of Veterans Affairs statistics, 167,284 of the 16 million Americans who served in World War II are alive in 2022.”
This website also has a graphic listing the number of living veterans by state.
https://www.nationalww2museum.org/war/wwii-veteran-statistics
My dad, WWII vet, would have been 100 last February.