^^ Youtube has a variety of "permissions" settings including private (as in you must be authorised by the owner to see it).
It is a hugely useful hosting platform for training videos and suchlike. Plus private and unlisted videos are not subject to the same copyright restrictions (for example with a musical soundtrack) as publicly listed videos.
Nice photo of the Nimrod AEW (Airborne Elephant, White). Just under 1bn tax payer's wonga down the swannee and pledge to review defence procurement, so that never happened again. Oh well...it was a nice thought.