The 3-man crew of an Alaskan cargo plane is crossing the Yukon border when they see a target closing in on them at an incredible speed. The brilliant glowing white object performs bizarre maneuvers and gives chase before disappearing. When Ryan and Fitz investigate, navigator Tim Jenkins relates the story of the UFO chase. Later, he mysteriously changes his story about the UFO sighting and claims he saw a weather balloon, even though Ryan and Fitz know that no weather balloons were in the area and NORAD picked up the UFO on its radar.