Re: Videos
Yes, they are definitely UFO's, though a bit of research on the web and reference to some fairly recent TV documentaries will provide some plausible, if mundane, explanations of what is being seen on the NASA clips.
The cigar shaped object? Very difficult to discern what it may be without any background information, visual reference points and with such a low-resolution clip ... a fragment of a momentary condensation trail may be?
Quite how any evidence contained within such clips can be used by many little green men protagonists to claim we're being visited by extra terrestrials beats me.
If you think of the number of eyes, cameras, radar scopes etc. trained on the skies at any given time is it not amazing that these sort of clips are the best that can be put forward?
I've seen a few 'Unidentified Flying Objects' in the strictest terms but I've never seen anything that might lead me to think it was something 'out of this world' much as my Trekkie fantasies would love me to!