mr. maulder, they've been here for a long, long time. >> reporter: leaving ufo buffs to wonder what's nextbe declassified. pete williams, nbc news, washington. >>> and anyone there's the story of a lion who was living a lie. a chinese zoo is under fire for trying to disguise a dog for a lion. really? visitors thought something was strange when the beast inside the lion's cage started to bark. instead of roar. think that's a clue? the animal was actually aty betten mastiff, with a lane not unlike a lion's a. in its defense, the zoo says it wasn't trying to deceive anyone. just making due while the lion was away for breeding. >>> when we come back, the young man who's following a dream thanks to a lot of people who never met him but were moved by his story. do you mind grabbing my phone and opening the capital one purchase eraser? i need to redeem some venture miles before my demise. okay. it's easy to erase any recent travel expense i want. just pick that flight right there. mmm hmmm. give it a few taps, and...it's taken care of. this is pretty easy, and i see it works on hotels too. you be