Given the revelation of Colonel Tigh as one of the final five Cylons, it strikes me as highly likely that the version of this model that calls itself John McCain poses an immediate and dire threat to the human race. Obviously its intention to install itself as the commander in chief of the worlds most powerful military force structure is nothing less than an attempt to sequester the population of Earth before the Colonial Fleet is able to arrive.
Once this thing has secured the destruction of the final human holdout world, there is nowhere left for the renegade Colonial Fleet to go, and the copy known as Colonel Saul Tigh will be free to act without hesitation.
This walking toaster must be thrown out the nearest available airlock. So say we all.