Good catch, @jkeck. 

@jchristo4 sorry I didn't think to bring this up when you were showing me the caption formatting, but I think we need to show the secondary caption on a new line below the primary caption. I don't think we need to add any extra spacing between the primary and secondary captions, so maybe just wrap the secondary caption in another ```div class="caption"```?

This does complicate your initial presentation of the caption, since I think what we want is the first line of both the primary and secondary captions, so you might have to allow for the height of another line between the bottom of the image and the indicators.

Let me know if the goal for the primary and secondary captions to be on separate lines isn't clear and we can discuss more.