reasons he could not take action was that his assessment was that it did not pose a military threat or postel- hostile intent. it seems like maybe that protocol changed or his ability to make that call was therefore -- where there was not an imminent threat middle -- militarily or physically might have changed. so can you explain to us what changed? why are we shooting them down all of a sudden? mr. kirby: i kind of feel like i took care of that in my opening statement, but i am happy to revisit it. i mean really, two reasons here. and these are certainly -- well in both cases, they are different. i think we need to separate the chinese spy balloon. we knew what it was. we know where it was going. we knew what it was trying to do. and by not taking it down, i mean that was also a huge payload, the size of three school buses. so really, the option was shooting that down overland was not a legitimate option because somebody really could have gotten her. and we used the time available to us, knowing what this thing was all about, we use that time to study it, to learn from it, to collect on it,