MARBLEHEAD-A Marblehead man was arrested Friday for his third drunk driving offense following a minor crash in the parking lot of National Grand Bank on Pleasant Street, police said.Gary R. Drennan, 67, of 9 Rowland St. was arrested and charged with operating under the influence of alcohol (third offense) shortly after 12 p.m.Drennan was allegedly driving his 1988 Volkswagen Jetta in the lot when he struck a 1998 Mercury Mountaineer owned by Harry Christensen of Marblehead causing minor damage. No injuries were reported.Police conducted a field sobriety test on Drennan before he was placed under arrest.