Westover Metropolitan Airport / Westover Air Reserve Base — Chicopee, United States

Westover Metropolitan Airport shares its runways with Westover Air Reserve Base, the largest Air Force Reserve installation in the United States, an arrangement that places civilian general-aviation and limited commercial activity alongside sizable military airlift operations in Chicopee, Massachusetts. CEF's massive runway, built to handle heavy transport aircraft like the C-5 Galaxy that reserve units have flown from the base for decades, gives the civilian side unusually generous infrastructure for its passenger volume. Located in the Pioneer Valley near Springfield, the airport reflects a Cold War legacy of joint military-civilian fields scattered across the Northeast. Cargo operations and charter flights make up much of Westover's non-military traffic today.