With the success of Operation Hurricane, Britain became the third nuclear power after the United States and the Soviet Union. The first production bombs, of the Blue Danube design, based on the Hurricane device, were delivered to the RAF in November 1953 and, two years later, the RAF had bombers capable of carrying them. In the interim, the UK relied on the US Strategic Air Command (SAC) for its nuclear deterrent. SAC began deploying nuclear-capable bombers to the UK in April 1949. Four weeks after Operation Hurricane, the United States successfully demonstrated a hydrogen bomb. The technology mastered in Operation Hurricane was six years old, and with the hydrogen bomb in hand, the US Congress saw no benefit in renewing cooperation. All the while Britain strove for independence, at the same time it sought interdependence in the form of a renewal of the Special Relationship with the United States. As successful as it was, Operation Hurricane fell short on both counts.