Because of the expected impact of the Hurricane along the Southeastern Shore from Florida up thru North Carolina,GULFSTREAM did not take any chances,evacuating all of their aircraft to Huntsville Intl (KHSV) there are between 30-40 Gulfstream Executive jets on the ramp at Signature Flight Support,they used one aircraft to shuttle pilots back to Savannah to bring back more jets.All used GULFTEST callsign.