professional wing-suit pilot james boole is traveling to russia's far east to shoot a documentary onts extreme landscape. >> it's covered in snow for nine months a year. it has the most active volcanos than any country on the planet. they call it the land of fire and ice. >>> it's the final flight of the trip, and he's eager to make it the most thrilling. >> we had done three other jumps that day. and it was obvious to everybody this was going to be the last jump because it was getting dark. we were nearly out of daylight. >> boole follows the lead wing-suit flier as he jumps from the helicopter into an icy gorge. >> i was filming. to help me frame the video, i had a ring site on my left eye. it gives you depth perception. plus the fact we're flying on snow. and in cloudy day, towards sunset, you can't make out the texture. it's just white. >> the plan is for boole to deploy his parachute at 600 feet, just after the lead wing-suit flier opens his. although it's dangerously low to the ground, boole is determined to capture as much of the flight as he can. >> so i was very committed to

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