Who is Anatoli Boukreev from The Climb: Tragic Ambitions on Everest and what is their importance?

Anatoli Boukreev was a Russian climber who took on Kazakhstani citizenship following the collapse of the Soviet Union. A highly trained and experience high-altitude mountain guide, Boukreev's services were in demand by the commercial expeditions preparing to climb Mt. Everest in 1996. He signed on with Mountain Madness, led by Scott Fischer, after Fischer offered him over twice the pay offered by another company.