User blog comment:Damac1214/Sales of Black Ops II are a "Cause of Concern" for Activision/@comment-8139606-20121202162727/@comment-1582746-20121203053349

I know Mining would be a rediculously long time for a killstreak. A gas attack, people would merely just avoid the area. Not sure about Mountable weapons (ie Those Heavy watercooled MGs, might not be like a sentry gun, but close enough). Well, multiplayer might be heck of a lot different than campagn. But I can imagine so many campagn missions that could (theoretically) take 16-20 hours.