Germany's swept wing research also made its way to the Swedish aircraft manufacturer SAAB, allegedly via a group of ex-Messerschmitt engineers that had fled to Switzerland during late 1945. At the time, SAAB was eager to make aeronautic advances, particularly in the new field of jet propulsion. The company incorporated both the jet engine and the swept wing to produce the Saab 29 Tunnan fighter; on 1 September 1948, the first prototype conducted its maiden flight, flown by the English test pilot S/L Robert A. 'Bob' Moore, DFC and bar, Although not well known outside Sweden, the Tunnan was the first Western European fighter to be introduced with such a wing configuration. In parallel, SAAB also developed another swept wing aircraft, the Saab 32 Lansen, primarily to serve as Sweden's standard attack aircraft. Its wing, which had a 10 per cent laminar profile and a 35° sweep, featured triangular fences near the wing roots in order to improve airflow when the aircraft was being flown at a high angle of attack. On 25 October 1953, a SAAB 32 Lansen attained a Mach number of at least 1.12 while in a shallow dive, exceeding the sound barrier.