Loring Air Force Base was a United States Air Force installation in northeastern Maine, near Limestone and Caribou in Aroostook County. It was one of the largest bases of the U.S. Air Force's Strategic Air Command during its existence, and was transferred to the newly created Air Combat Command in 1992.

Limestone is a town in Aroostook County, Maine, United States. The population was 1,526 at the 2020 census.