 Challenger pilots flew thousands of passengers who had been immobilized by roof-high snow drifts which blocked highways and railroads over much of the state.Tons of fresh meat, bread, produce and Red Cross supplies filled practically every scheduled and shuttle flight to its gross weight capacity as Challenger's "Sunliners" roared off snow swept airports across Wyoming.The airline was in financial trouble most of its existence and merged with Monarch Airlines and Arizona Airways on June 1, 1950, to form Frontier Airlines, headquartered in Denver, Colorado.