If you thought politicians would be more responsible having to state their approval of political ads, you haven't been paying attention to Bush. This is one of the most deceptive and fear-inducing ads of the campaign. It's this kind of dark thinking which is turning Americans off to these jackasses by the boatload.
And the terrorist attack they refer to is the 1993 attack of the WTC's garage. They intentionally mislead here so people don't remember Cheney's abysmal intel/military/security voting/recommendation record from back then.
Blah3 points out that the Dems have a counter-spot ready to go when the Bush Crackheads unleash theirs. It's just a touch more positive - and invokes the very symbol of America's strength. Touche'.