I won't give away the detail about whether Jayne knows or not, but you'll find out.

The alien plans are pretty secret. Johnny doesn't even know everything about them. But some of the details might come up. Minor details. Heheh... like maybe alien appendages. But maybe not. I can imagine the topic coming up, and them Ripp just blurting out his question to Johnny. *snicker* That would be funny.

That's right. Tank's only going to that other party. Johnny and Ophelia don't even know that Ripp invited him.