When Leslie, Ron, April and Andy are strategizing how to save JJ's diner, you can see Mike Pence's framed picture in JJ diner's wall behind Leslie. At the time of filming of this episode (2014), Mike Pence was the governor of Indiana; however, the episode is set in 2017, and in 2017 Mike Pence is the vice president of the United States.
Gryzzl tries to make amends for invading the privacy of the people of Pawnee, by automatically putting tickets to a concert with U2 and Beyoncé onto their phones. In 2014 Apple and the band U2 caused a controversy, by automatically adding the U2 album 'Songs of Innocence' into the library of every iTunes account, without giving the users the ability to remove it again.
When Feinstein comes out to announce JJ's is staying he says "whoa, whoa, whoa. Stop the clock." This is a reference to Howard Stern's head of security and limo driver, Ronnie Mund who popularized the phrase.
The chime sound which the employees hear on their phone is identical from the TV series Shark Tank (2009).