Tell HN: Weird footage of oil spill on CNN.

There is a video posted on CNN here: http://edition.cnn.com/video/data/2.0/video/us/2010/06/08/vo.new.oil.spill.high.resolution.bp.html

If you watch the top right corner of the video just beyond the pipe, you`ll see a door open at 37 seconds in. What's up with that?