Derek Gronlund, a Marsh Creek LLC employee, takes a break after pilling tons of ice and snow onto the Yukon River, March 19. Marsh Creek LLC, a contractor for the 611th Civil Engineer Squadron, is building an ice bridge to move supplies for demolition of the former Kalakaket Creek Radio Relay Station that is located 310 miles northwest of Anchorage. The station was built in 1957 and was used to transfer defense communications between White Alice Communication Systems up for demolition because of satellite technology in mid 1970s. (U.S. Air Force photo by Senior Airman Jonathan Steffen)

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Don Smith, a Marsh Creek LLC employee, unloads snow onto the Yukon River, March 19. Marsh Creek LLC, a contractor for the 611th Civil Engineer Squadron, is building an ice bridge to move supplies for demolition of the former Kalakaket Creek Radio Relay Station that is located 310 miles northwest of Anchorage. The station was built in 1957 and was used to transfer defense communications between White Alice Communication Systems up for demolition because of satellite technology in mid 1970s. (U.S. Air Force photo by Senior Airman Jonathan Steffen)

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Derek Gronlund and Dave Vandergriff, Marsh Creek LLC employees, drill through four feet of ice on the Yukon River, March 19. Marsh Creek LLC, a contractor for the 611th Civil Engineer Squadron, is building an ice bridge to move supplies for demolition of the former Kalakaket Creek Radio Relay Station that is located 310 miles northwest of Anchorage. The station was built in 1957 and was used to transfer defense communications between White Alice Communication Systems up for demolition because of satellite technology in mid 1970s. (U.S. Air Force photo by Senior Airman Jonathan Steffen)

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Dave Vandergriff, a Marsh Creek LLC employee, melts ice that collected on an auger because of subzero temperatures, March 19. Marsh Creek LLC, a contractor for the 611th Civil Engineer Squadron, is building an ice bridge to move supplies for demolition of the former Kalakaket Creek Radio Relay Station that is located 310 miles northwest of Anchorage. The station was built in 1957 and was used to transfer defense communications between White Alice Communication Systems up for demolition because of satellite technology in mid 1970s. (U.S. Air Force photo by Senior Airman Jonathan Steffen)

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Derek Gronlund, a Marsh Creek LLC employee, sharpens the blades of an auger, March 19. Marsh Creek LLC, a contractor for the 611th Civil Engineer Squadron, is building an ice bridge to move supplies for demolition of the former Kalakaket Creek Radio Relay Station that is located 310 miles northwest of Anchorage. The station was built in 1957 and was used to transfer defense communications between White Alice Communication Systems up for demolition because of satellite technology in mid 1970s. (U.S. Air Force photo by Senior Airman Jonathan Steffen)

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Derek Gronlund, a Marsh Creek LLC employee, sharpens the blades of an auger, March 19. Marsh Creek LLC, a contractor for the 611th Civil Engineer Squadron, is building an ice bridge to move supplies for demolition of the former Kalakaket Creek Radio Relay Station that is located 310 miles northwest of Anchorage. The station was built in 1957 and was used to transfer defense communications between White Alice Communication Systems up for demolition because of satellite technology in mid 1970s. (U.S. Air Force photo by Senior Airman Jonathan Steffen)

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Dave Vandergriff, a Marsh Creek LLC employee, shoots out water onto the Yukon River, March 19. Marsh Creek LLC, a contractor for the 611th Civil Engineer Squadron, is building an ice bridge to move supplies for demolition of the former Kalakaket Creek Radio Relay Station that is located 310 miles northwest of Anchorage. The station was built in 1957 and was used to transfer defense communications between White Alice Communication Systems up for demolition because of satellite technology in mid 1970s. (U.S. Air Force photo by Senior Airman Jonathan Steffen)

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Dennis Stacey, a Marsh Creek LLC employee, drives a dump truck full of snow to unload on the Yukon River, March 19. Marsh Creek LLC, a contractor for the 611th Civil Engineer Squadron, is building an ice bridge to move supplies for demolition of the former Kalakaket Creek Radio Relay Station that is located 310 miles northwest of Anchorage. The station was built in 1957 and was used to transfer defense communications between White Alice Communication Systems up for demolition because of satellite technology in mid 1970s. (U.S. Air Force photo by Senior Airman Jonathan Steffen)

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A Marsh Creek LLC employee fills up truckloads of snow and ice to unload onto the Yukon River, March 17, 2009. Marsh Creek LLC, a contractor for the 611th Civil Engineer Squadron, is building an ice bridge to move supplies for demolition of the former Kalakaket Creek Radio Relay Station that is located 310 miles northwest of Anchorage. The station was built in 1957 and was used to transfer defense communications between White Alice Communication Systems up for demolition because of satellite technology in mid 1970s. (U.S. Air Force photo by Senior Airman Jonathan Steffen/ Released)

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Alfred Nollener, a Marsh Creek LLC employee, melts ice around a water truck hookup used to spread water onto the Yukon River, March 17. Marsh Creek LLC, a contractor for the 611th Civil Engineer Squadron, is building an ice bridge to move supplies for demolition of the former Kalakaket Creek Radio Relay Station that is located 310 miles northwest of Anchorage. The station was built in 1957 and was used to transfer defense communications between White Alice Communication Systems up for demolition because of satellite technology in mid 1970s. (U.S. Air Force photo by Senior Airman Jonathan Steffen)

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Derek Gronlund, a Marsh Creek LLC employee, attaches a shackle to a forklift to pull a cat train full of supplies toward Kalakaket Creek, March 17. Marsh Creek LLC, a contractor for the 611th Civil Engineer Squadron, is building an ice bridge to move supplies for demolition of the former Kalakaket Creek Radio Relay Station that is located 310 miles northwest of Anchorage. The station was built in 1957 and was used to transfer defense communications between White Alice Communication Systems up for demolition because of satellite technology in mid 1970s. (U.S. Air Force photo by Senior Airman Jonathan Steffen)

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A cat train full of supplies rides down the Yukon River toward Kalakaket Creek, March 17. The supplies will be used to demolish the former Kalakaket Creek Radio Relay Station, located 310 miles northwest of Anchorage. The station was built in 1957 and was used to transfer defense communications between White Alice Communication Systems up for demolition because of satellite technology in mid 1970s. (U.S. Air Force photo by Senior Airman Jonathan Steffen)

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Staff Sgt. Mark Leahy, 3rd Wing, sets up his video equipment for an interview with Dave Vandergriff a Marsh Creek LLC employee on the Yukon River, March 17. Marsh Creek LLC, a contractor for the 611th Civil Engineer Squadron, is building an ice bridge to move supplies for demolition of the former Kalakaket Creek Radio Relay Station that is located 310 miles northwest of Anchorage. The station was built in 1957 and was used to transfer defense communications between White Alice Communication Systems up for demolition because of satellite technology in mid 1970s. (U.S. Air Force photo by Senior Airman Jonathan Steffen)

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Operation Clean Sweep

Published March 23, 2009