make sure that we don t have any collateral injuries or deaths. as the chairman said earlier, we need to be able to go out and say that publicly, and that s critically important. because people are reacting to a lot of falsehoods out there, and i see this as part of my obligation, and that the truth is known to the public and the world. mr. brennan, i m convinced that color parts of drone security that can be. and let me ask you other questions with respect to the president s authority to kill americans. i ve asked you how much evidence that the president needs to decide that a particular american can be lawfully killed. and whether the administration believes that the president can use this authority inside of the united states. my in my judgment, both the congress and the public need to understand the answers to these