(Biloxi, MS) -- Investigators still aren't saying how a Navy Seabee from Oregon was shot to death in Biloxi, Mississippi, but they indicate that foul play is not suspected. The Naval Criminal Investigative Service has been handling the case. Grace Kayla-Marcheschi, originally from Oregon, was assigned to the Naval Construction Battalion at Gulfport. She was killed Saturday morning at a Keesler Air Force Base housing unit.