let's go to melissa rogers. understatement, you're excited this morning? >> very excited. we are so glad that this day has finally come, that we've been planning for for so long. it's a wonderful moment for us to be able to welcome pope francis and to look forward to the conversation and the speeches that will happen today. >> let's deal with the practicality. you have the ruler of china in the country right now. when you have the pope and the potus, you have a security situation that you really have to lock down. how different are today's preparations? >> well, of course we wanted to be very careful about that. i'm not the expert in security. >> right. i know you've been briefed. >> we've all wanted to be very careful and mindful of that while also respecting the pope's interest in being engaged with people. >> so what do you do in terms of when this man comes? he's representing the catholic church. he's not a politician. though every pope strays into the political. this one is that and then some. how do you deal with someone who is not a political equal but may