We are aware of an issue that sometimes occurs opening our PDF files over HTTP. We are working to fix it but if you encounter this issue please try downloading the file over HTTPS by changing the URL like so:
If you receive a security warning it is due to our use of a certificate issued by the Defense Department certificate authority. It is a valid certificate, but it's not distributed by commercial vendors when you download their browser.
You can accept the certificate by selecting the "Continue to this website (not recommended)" option in Internet Explorer.
If that selection is an uncomfortable option, you can follow instructions under "Resolving the Issue (The More-Permanent Way)" here: http://mrmc.amedd.army.mil/index.cfm?pageid=ssl to verify that the certificate is a valid DoD-signed certificate.