J.R. Scheimpough has some coordinates tattooed on his chest: "33 00 00 / -104 00 00". This corresponds roughly to Roswell air base (where some aliens from the famous UFO crash from 1947 are supposed to be hidden).
Regan sends Ron, voiced by Adam Scott, a meme of a little horse. Adam Scott was on Parks and Recreation which featured several episodes about a little horse named Lil' Sebastian.