Code for adding a post's image's caption

Right now I am using “excerpt” in my template
http://eliteathletic.com/ah-home-page/
Second column. Client doesn’t understand that they paste the caption in the excerpt section so they just use “more”
any ideas?

WordPress 3.8.3 running Twenty Thirteen Child theme.
Thanks

https://wordpress.org/plugins/blog-in-blog/