I would recommend Chesapeake Bay Helicopters in Norfolk Virginia who deal a lot with military personnel leaving the Service and who want to train as helo pilots. CBH is a part-141 school which means the US Government will do the existing 'GI Loan' payments (can't remember what they are called). I used to work for CBH and they do a pretty good job; there were always (in fact most) students there from the nearby US Navy/Marines; it was a fun atmosphere.
Give them a call, website:
Helicopter Flight School and External Load Services VA | CBHELOS
Flug