Complete the Interceptor mission and collect a Stronghold Keycard
Source:https://www.polygon.com/modern-warfare-3-guides/23959488/mercenary-convoy-interceptor-stronghold-keycard-location-zombies-mw3Complete the Interceptor mission and collect a Stronghold Keycard
Source:https://www.polygon.com/modern-warfare-3-guides/23959488/mercenary-convoy-interceptor-stronghold-keycard-location-zombies-mw3