The platform we used for the website since 2013 (vBulletin 4.xx) is being discontinued. We were in a bind because many of the plugins we were using (most notably the forms plugin that handles our missions) are no longer being supported. This means that would could not update the backend scripting files or the backend database.
Failure to do some of these updates would leave the website open to security problems, but doing them would break required functionality of the system. In short, it was an unsupportable situation, and we had to make a change.
We made the decision to use the most widely used and support platform instead – WordPress. While it entails some major changes, we are confident that this is the best move for the organization.