I don't remember domestic trips. They did have a neighborhood outreach program.
And there was at least one organized international trip while we were there. There may have been more. I just remember the one.
Looking at Calvanism as anything to do with evangelism is like watching a dog drive a suv. You think you see what your eyes tell you that you see, but you have a hard time believing that it can work.
Calvanism, by it's own beliefs, cannot offer to "the great unwashed masses" the opportunity to "get saved" because they believe in predestination, not "free election" of the lost. If you are lost, according to Calvanism, you cannot make a choice about your decision to be saved, you have to be "called" by God to make that decision. The act of deciding is not as it is with those that are not Calvanistic. The act of being called is totally up to God through you, and not you yourself.
Again, i see the dog driving, but i know that there is more to the eye than that.