coming, live pictures here in maryland. we're hearing officially from white house pool that president obama has now arrived a ahead of pope francis. they are on the tarmac along with the first lady, vice president joe biden there as well. but we have new information as it pertains to the papal plane. let's go to our aviation correspondent renee marsh with a little bit of news. this plane, according to a website tracking all these flights, it's been circling for a bit. >> right, so we saw it in realtime doing about two loops. at one point it made a u-turn and did that for quite some time. the question was what was happening. the reason was simply because it