The Triangle Cloud

Naudet 911 Region 1 DVD clock time 0:53:59.
See triangle cloud rising in lower left while everyone's attention is on
the demolition of the South Tower, around 9:55 a.m. on 9/11.

For a much fuller version, discovered years after the above, see from 2:55 to 3:29 at
http://www.youtube.com/watch?v=ZvUrJd4LpUA