Here is the response that I received from our server techs:
Hello Scott,
I've double checked and your MySQL time, System Clock, and NTPD Time are all in sync and about +/- 3~6ms off which is well within the margin for error as you're never going to get millisecond perfect timing over the internet.
If anything I would expect that the PHP Time for the website is not matching up, but I do not know how their software works so I cannot say if that matters - https://www.usmilitariaforum.com/time.php
As you can see the PHP time zone used is UTC where as the server time is PDT and they differ by several hours.
Do note that this is only a guess, as we are not coders or web developers and do not have any experience with the captcha that you're trying to use. This goes well beyond our general scope of support. We can only guarantee that the server itself is working and is syncing with NTP time correctly.
Sincerely,
Chris Robin
www.Codero.com