So maybe with all the "MS-13 Animals," comments means more. So I gooble "13 animals" and get a hit for the rescuing of 13 animals from the Magic World zoo of Aleppo, Syria, by an organization named Four Paws. Four Paws operates in 13 countries.

The article talks about operations in Mosul, Libya, Gaza, etc. This kind of ops would be good cover for exfil/mop up.

https:// news.nationalgeographic.com/2017/10/wildlife-watch-rescuing-animals-aleppo-syria-zoo/

http:// www.four-paws.us/about-us/about-us/