 In Doug Jones's Pathfinder aircraft, the bomb aimer, Flying Officer Tom Hodkinson, lying in the nose, called out the Rhine and, as the force crossed the river into Germany, north of Basel, Jones began climbing to attack height.The route curved around the northern border of neutral Switzerland towards Friedrichshafen.Fawke unfeathered his No.2 prop to turn the engine, because the port inner powered the Lancaster's Mark XIV bomb sight computer, but the engine then caught fire.