Was he sick? 77 years isn't that old, these days.
[1] https://en.wikipedia.org/wiki/List_of_U.S._states_and_territ...
The most frequent age at death is in your mid to late 80s. I'd like to post the statistic on the 25th and 75th percentile of age at death or maybe 40th, 60th, but I can't readily find the data with the amount of effort I'm willing to put in.
Here's a histogram though
https://www.researchgate.net/figure/Histogram-of-estimated-n...
that's life expectancy at birth. The life expectancy of a man who is 70 yo today, having already not died of all the causes that harvest young men, is 13+ years more (without accounting for other aspects of their demographic)