Suppose, further, that he is caught at 10 a.m on the fateful day, but preferring death to failure, won't disclose where the bomb is. If we follow due process, wait for his lawyer, arraign him, millions of people will die. I suggest there are none. In any case, I ask you to face the question with an open mind. But millions of lives surely outweigh constitutionality.
Mass murder is far more barbaric.
Indeed, letting millions of innocents die in deference to one who flaunts his guilt is moral cowardice, an unwillingness to dirty one's hands. Once you concede that torture is justified in extreme cases, you have admitted that the decision to use torture is a matter of balancing innocent lives against the means needed to save them. You must now face more realistic cases involving more modest numbers. Someone plants a bomb on a jumbo jet. Surely we can, we must, do anything to the extortionist to save the passengers.