>> reporter: good morning. it's been a very interesting 24 hours here in mexico. the pope arrived yesterday afternoon. as you say, he was met by the president of this country, but then when he went to where he's staying overnight, and he's still resting at this hour mexico time, he saw 21-mile human wall, many standing for days, just for the opportunity to see the pope and the pope mobile passing by. the pope this morning will have a private mass. then, alex, later this afternoon he'll have a private meeting. this is the first time the two leaders will meet and the first time the pope arrives to mexican territory. he will speak 20 feet behind me in a balcony here in the incredibly historic city of