G.I. JOE: A REAL AMERICAN HERO (1982) #92

A rescue mission is mounted for Shockwave, Recondo, and Lt Falcon who are being held in Sierra Gordo. Voltar sends in Cobra troops and Iron Grenadiers to Rio Lindo to attack the current leaders, El Jefe and Delbert Swinson. It just so happens that they are the ones also holding the Joes and October Guard members captive.