At night, you can't see the terrain textures, just the lights. If the is very dark, you can't see the horizon neither.
If the real night was like the screenshot, the NVG wouldn't have been created.
It's really fast forwarded. See this another vídeo:
http://pff.blogsome.com/2005/12/09/e-assim-que-se-voa-no-exercito/
Some maneuvers are performed at 100 kt and it's not so fast like that BO-105.
Thank you. We intend record a video from the ground too. It's difficult because we don't perform a flight just for the video.
Another video, about the 17th Anniversary of Army Aviation (3 years ago): http://pff.blogsome.com/2005/12/21/dezessete-anos-da-aviacao-do-exercito/