[ buzz! ] 1... 2... 3...lift! ha-ha ha ha ha! [ slam! ] [ ding! ] [ chirp! ] [ stomp! stomp! stomp! stomp! ] [ beep! crank! ] [ pop! pop! pop! ] [ ding! ] [ girl ] ha-ha ha ha ha! [ clank! fizz! clink! ] it's... time! [ click! click! click! click! ] [ indistinct conversations ] shh! [ girl ] it's on! [ female announcer ] walmart presents "secrets of the mountain." friday, april 16th, 8/7 central on nbc. family movie night is back. with thousands of rollbacks, it's rollback time. save money. live better. walmart. bottom of the hour. so let's look what's driving the day. >> as many as 17,000 flights are