the detonation mechanism was not successf successful. if they can put assembly a bomb that has the sort of blast effect and they can get the detonation right and they can get it past our screening methods, it could have a very serious impact. and we ve seen sort of experts explode bombs and show the impact of them blowing out the side of a plane, but it requires a whole lot of things to go right. and fortunately up to now, they haven t been able to pull it off. we weren t blind to this threat before, so there are screening methods in place. especially at flights in emanate outside the united states heading in. we know that s a particular focus of this threat. so go back to the shoes that are easy to get on and off. exactly right. appreciate the perspective as always. going to take a look at the morning papers. we re going to start with the washington post.