Before your eyes.

http://www.youtube.com/watch?v=rE2WPb6ceeg

http://www.youtube.com/watch?v=WNtrsO99Uls&feature=related

Saw these at the towers on 911 TV show!

http://www.youtube.com/watch?v=xVyKgBNmE9E&NR=1

Seen this more than once and in apparition.

http://www.youtube.com/watch?v=f_WzOxV0yIU

http://www.youtube.com/watch?v=BbhLad96JwA&feature=related