More public domain free video from the us government to use in your fourth of july mashup. Video resolution is 720x480 NTSC and there is NO AUDIO. So you have the video but it's up to you to find an appropriate song to add to it.

You can view all these videos in my nature channel at: http://www.liveleak.com/c/Nature

Tags: public domain free video mashup fourth 4th of july no audio

To promote the Progress of Science and useful Arts...