>(parent, sibling, uncle/aunt, or grandparent)

That's a pretty wide net. What percentage of the total population has a military connection in that many degrees?

Obv not a great sample, but within my peer group, none have parents or siblings. I have an uncle. Grandparent is a weird one - for anybody born in the 70s as I was, it’s almost a given to have a grandparent or four who served. Being European, all of mine served at the tail end of WWII or immediate aftermath.