Thanks for that article!
Richard Ardito was one of the authors and he was at the Route 01 Harvest Festival Concert with his wife. He was also close friends with Kymberly Suchomel (The 28 year old witness who died of a stroke while she slept after posting detailed account of more than 1 shooter at the venue.)
He is also a CPA and an Assistant Professor, his profile states he studied at Liberty University. He worked together with a team to investigate the shooting in Vegas.