Tibbets flew the lead bomber "Butcher Shop" for the first American daylight heavy bomber mission on 17 August 1942, a shallow-penetration raid against a marshalling yard in Rouen in Occupied France, with Armstrong as his co-pilot. This was not Tibbets's regular aircraft, "Red Gremlin", nor his regular crew, which included bombardier Thomas Ferebee and navigator Theodore Van Kirk, who later flew with him in "Enola Gay". On 9 October 1942, Tibbets led the first American raid of more than 100 bombers in Europe, attacking industrial targets in the French city of Lille. Poor bombing accuracy resulted in numerous civilian casualties and less damage to the rail installations than hoped, but the mission was hailed an overall success because it reached its target against heavy and constant fighter attack. Of the 108 aircraft in the raid, 33 were shot down or had to turn back due to mechanical problems.