Dateline has shown you "10 Close Encounters Caught on Tape." Now it's your turn.
If you think you've had your own close encounter, submit it here with any photos or videos, and you could be featured on Dateline or on msnbc.com.
Do you think you have seen a UFO?
Tell us about it and you may be featured in a future episode of Dateline NBC or on msnbc.com
