I recall that one example used was that a TV newsman could be prosecuted if a terrorist watching his television show found useful information about a potential target of a forthcoming terrorist attack.
Do a historical report on the White House, go to jail.
Or point out how our airport security is failing, or how we are not doing enough to protect our nuclear power plants, or point out weaknesses in our border policy.
Basically, any criticism of the government and the war on terror could be spun as "aiding and assisting" a terrorist organisation.