If have to say the government didn't get involved, at least right away because whos gonna believe zombies actually are running around eating people and turning others? By the time the pres. And the DOD get actual confirmation and see it with their own eyes it's too late for a full military mobilization, because the disease spread too quick. Only having a portion of their original strength the pres and DOD decide to pull their forces for a defensive operation where they quarantine say DC and set up base to work on a cure or a plan to fire bomb all the major cities to kill off as many as they can which could lead to your heroes having beef with them somewhere down the line. Sorry if I am posting wrong or sound like an idiot this is my first time on here and zombies tend to catch my attention...

I have to say the government won't get involved, at least not right away, because who's gonna believe zombies actually are running around eating people and turning others?
By the time the president and the DOD get actual confirmation and see it with their own eyes it's too late for a full military mobilization, because the disease spreads too quickly.
Only having a portion of their original strength the president and DOD decide to pull their forces for a defensive operation where they quarantine, say, DC and set up a base to work on a cure or a plan to fire bomb all the major cities to kill off as many as they can. This could lead to your heroes having beef with them somewhere down the line.