Plus man on the wire, Philippe Petit, how the walk between the twin towers changed his life forever. It has been 42 days since more than 300 girls were an deducted from their school in nigeria. U. S. Troops and drones have joined in the search. So far no signs of them. Tonight that may have changed. Nigerias defense chief today said he knows where the girls are but that the military wont use force to rescue them. Yvonne ndege has more. This information comes from nigerias chief of defense staff. And he gave an interview to the state news agency in which he basically said, let me quote, the good news for the parents of the missing girls, we know where they are but he also added we cannot tell you, we cant go into the area where the girls are kept with any kind of military force. We cant kill our girls with the reason for getting them back. Leave us alone. We are working, we will get the girls back. Obviously this will comfort the parents of the missing girls and the millions of concerne