Aside from hiring the announcer it should be a cinch... and they could finagle some sort of explanation for being outdoors and just use the same maps we already have
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Hell, I'll admit it, I just want this guy back:
Or failing that, I'll settle for this guy:
Getting Duncan back, ALONE, would improve the MW:O experience 400000%.
... I guess naming could be a problem. We can't all be "Specter", after all...
Hmm.