Blowing the whistle on a false flag attack is obviously crucial (and see this).
But there's something else you can do to save the country.
Meeting with as many state troopers, marshals, police captains, national guardsmen, soldiers and other folks who would actually be tasked with implementing martial law if and when the powers-that-be decide that velvet-gloved "soft fascism" is no longer working or moving their plans along fast enough.
Many police officers, guardsmen and military personnel are good people who simply don't know what's really going on in America.
As former officers, it is possible that they will respect and look up to you. If you educate them with the most well-documented facts about our country's descent into fascism, then you will be planting vital seeds of truth.
One day, the people you talk to (and those they speak with) just might say "no" if they are asked to carry out illegal orders to imprison, kill or torture Americans simply for exercising their lawful, constitutional rights to criticize the government.
Who knows? By talking to them with respect and truth, they may one day even help to expose the crimes or arrest those criminals who are using their positions within the U.S. government or the defense industry to destroy the nation and line their own pockets (for example, these guys).