Worried that the Soviets are winning the war in Afghanistan, the US decides to train and arm the mujaheddin with Stinger missiles. The Soviets are forced to stop using the attack helicopters that were being used to devastating effect. Some claim the Stingers turn the tide of the war and lead directly to Soviet withdrawal. Now the mujaheddin are better trained and armed than ever before. [Coll, 2004, pp. 11, 149-51; Clarke, 2004, pp. 48-50] The British Special Air Service (SAS) train the mujaheddin in how to use the Stingers (see 1980-1989).