Today, the 437 AW and 315 AW (Associate) operate the C-17 Globemaster III. The base has also maintained an alert site for fighter-interceptor aircraft (primarily Air National Guard aircraft) of Tactical Air Command (TAC) and Air Combat Command (ACC), conducting the continental air defense mission. The last unit to occupy the alert site was a detachment of F-16 aircraft from the 158th Fighter Wing of the Vermont Air National Guard. Detachment operations officially ended at the end of FY99, with the facility placed in caretaker status. However, since 11 September 2001, the facility has seen intermittent operations by various USAF fighter aircraft of the Active and Reserve Components resuming the continental air defense mission under the cognizance of United States Northern Command and NORAD. In FY 2014-2015 the alert site and associated hangar were demolished.