continue providing essential air service at seven Montana communities (Glasgow, Glendive, Havre, Lewistown, Miles City, Sidney, and Wolf Point) for a new two-year period beginning March 1, 2006, at a subsidy of $6,838,934 annually. Order 2007-11-21: selecting Big Sky Transportation Co., d/b/a Big Sky Airlines, to continue providing essential air service at seven Montana communities for a new two-year period beginning March 1, 2008, at a subsidy of $8,473,617 annually. Order 2007-12-22: allowing Big Sky Transportation Co., d/b/a Big Sky Airlines, to suspend its subsidized essential air services at seven Montana communities on the date that Great Lakes Aviation, Ltd., begins replacement service, and selecting Great Lakes to provide those services at subsidy rates totaling $8,201,992. Order 2008-7-9: approving an alternate service pattern requested by Lewistown, Miles City and Sidney, Montana. Order 2011-1-27: selecting Gulfstream International Airlines, to provide subsidized essential air service (EAS) with 19-passenger Beechcraft B-1900D aircraft at Glasgow, Glendive, Havre, Lewistown, Miles City, Sidney, and Wolf Point, Montana, for a two-year period beginning when the carrier inaugurates full EAS at all seven communities through the end of the 24th month thereafter, at a combined annual subsidy rate of $10,903,854. External links Lewistown Municipal Airport, official website 1943 establishments in Montana Airports established in 1943 Airfields of the United States Army Air Forces in Montana Airports in Montana Former Essential Air Service airports Buildings and structures in Fergus County, Montana Transportation in Fergus County, Montana