Project Blue Book Case #2976. On April 24, 1954, witnesses in Hartland, Maine — a small community on the Sebasticook River in Somerset County — observed a bright object. Maine's vast northern forests and sparse population provided some of the darkest skies in the eastern United States.
Hartland sits approximately 70 miles from Loring AFB in Limestone — SAC's northeasternmost bomber base. The case was classified "Unknown."