"THE NEW BLUE - Lt. Col. Ronald Hirtle, new commander, stands with his fiance, Laura Snow, after the change of command ceremony Wednesday morning at Air Force Plant 42 in Palmdale." KELLY LACEFIELD/Valley Press "THE NEW BLUE - Lt. Col. Ronald Hirtle, new commander, stands with his fiance, Laura Snow, after the change of command ceremony Wednesday morning at Air Force Plant 42 in Palmdale." KELLY LACEFIELD/Valley Press