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Impact is the ninth episode of the third season of JAG, and the forty-sixth episode overall.
Starring: David James Elliott (Navy Lt. Commander Harmon Rabb, Jr.), Catherine Bell (Marine Major Sarah MacKenzie), Patrick Labyorteaux (Navy Ensign Bud Roberts, Jr.), John M. Jackson (Navy Admiral Chegwidden)
Guest Starring: Peter Murnik (Clark Palmer), Gary Collins (Senior Attorney), Larry Poindexter (Dalton Lowne), Jerry Hardin (Senator), Michael Storm (Admiral Hercules Elgin), Carol Barbee (Mrs. Cray), Jackson Walker (), Reese Selley (), Bart Johnson (Lt. Johnson)
and Randolph Mantooth (Colonel Ron Barret)