Market can easily move higher. Each one of those two stocks will need to correct the huge dumps they have had. Even with those blow ups, the market is not down that much. If FNM goes up a few bucks and so does MRK, I would think the Dow will do just fine. Plus, CAT is exploding here.
I am not a bull here, but stating that corrective moves in these stocks can help move the Dow up.