I went to one about a year ago. Never again. Or, at least, not one I don't fully know what to expect of it beforehand.
It was organized via the Chaplain's office on base. Friday evening thru Sunday morning. After being called a "heathen" about a dozen times in the video presentations they were using, I almost walked out. Neither DH nor I am Christian, but had assumed that the Chaplain would have _mentioned_ the Christian focus for the event if it was going to be that heavy handed... Seeing as the Chaplaincy is _supposed_ to support all religions, we thought this was reasonable thinking. Silly us.