This is an article from Packers.com that I read while reading about Ibrahim Campbell (who I believe will be active today). Perhaps the two most interesting things that I learned from the article is (a) Tom Hruby was Vitale's best friend at Northwestern and (b) Tommy Vitale has enlisted in the Navy and will ship out later this month.
https://www.packers.com/news/deep-family-ties-fuel-danny-vitale-s-appreciation-for-military
https://www.packers.com/news/deep-family-ties-fuel-danny-vitale-s-appreciation-for-military