Jan. 8, 2021 The 81st Air Control Squadron Completes COMBAT SENTRY 21A, integrating WSEP with E-3G Operational Test The 81st Air Control Squadron, in coordination with the 83d Fighter Weapon Squadron, 82d Aerial Target Squadron, and the 53d Test Support Squadron, planned and conducted COMBAT SENTRY 21A from December 7-15, 2020.