Apparently there is the CoD Zombie labs symbol as camouflage on some Pack-a-Punched weapons in the map Classified. Does this mean these trailers, aging from the Black Ops I era, are confirmed to be canon?
Appearing in the Pentagon, does this mean the Labs are American? Is it a part of the Broken Arrow program? This would actually make sense concerning some things seen in the trailers: The Nova-6 Crawlers and the Wavegun. We know the Americans experimented with the Nova-6 Crawlers (we even found blueprints in Classified) and they might have found the Wavegun in Griffin Station. Or perhaps they invented it.
This raises in second question in my head: Did the Americans ever succeed in creating a stable and functioning Matter Transference link between Groom Lake and Griffin Station in the same moment (so no time travel). If so, the Zombie Labs in Griffin Station could very well be the American Zombie Labs from the trailers.