Officer Charleston Hartfield was off-duty at the route 91 music festival and was one of the off-duty officers who was killed during that massacre. He recently released a book titled Memoirs of a Public Servant. I just found out and ordered a copy. It is a good way to help his family out as they are most definitely mourning his loss. I'll post up about the book once I get through it, get your copy and support a fallen officer.