The Egyptian military has staged an apparent show of strength in the capital Cairo during a sixth day of anti-government protests.
Two air force jets and a helicopter are repeatedly flying low over Tahrir (Liberation) Square, the main gathering point for demonstrators.
A column of tanks arrived there only to have its path blocked by demonstrators.
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From the YouTube post: An Al Jazeera online producer in Cairo captures video of the jets flying overhead on the afternoon of January 30, 2011, as citizens patrol their neighborhood.
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