It’s too late and the plan doesn’t work. The zombies are already in control of Washington, D.C. and most northern cities. They have infiltrated the military and are seeking to establish complete control throughout the heartland. Fortunately, this strain of Zombie sp. doesn’t actually eat the victims brain; they simply homogenize it with public education and inject toxins as they need too for populace control thus creating new ranks of fellow zombies. The only known antidote is communicating truth and, as of the time of this writing, they essentially control the major information outlets in the country and throughout the world.
The DoD's plan is in place just in case another breed of zombies tries to takeover from the current zombies in office.