Are you sure about the contrail thing? The way the 'contrail' looked right after leaving the 'thing' didn't look anything like any contrail I've ever seen. In addition to that, check out this video around 0:44: http://www.cbsnews.com/stories/2010/11/09/national/main7036716.shtml?tag=contentMain;contentBody. What do you think of the way the thing appears to be illuminated? At first, the colour made me think it was definitely a missile, then right before the screen changes, it looks a bit green.
EDIT: Also, look at this picture -
. Just the way it's curved doesn't look like something a plane would do.
EDIT: Also, look at this picture -
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