Mistake in Tips and Notes
There: https://www.duolingo.com/skill/ru/Around-you — is a mistake in LOCATIVE 2.
There should be Мы в аэропорту́ instead of Мы в аэпорту́.
(Sorry, tried to found where to write something like that and couldn't find something better.)
Thanks so much for pointing it out! I fixed it, it should be fine on the main site now. :)