re: What's up with this website???
What warning?
I just get a direct link to the NASA ftp site that leads to jpegs of the ion engines.
Perhaps your browser is working differently than mine (Firefox). I know that when you log on by DOS ftp to a US government website you get a standard warning that you're accessing potentially confidential material and that your actions will be tracked. All space hardware is linked to potential military or terrorist use to a greater or lesser extent, and some is covered by ITAR.