In Joan of Arcadia, Jason Ritter played a boy named Kevin whose sister interacts with versions of God. In this show, he plays a character named Kevin who also has the ability to communicate with the supernatural.
JoAnna Garcia physically resembles Amy Adams. In this episode, she advises the military on the arrival of unknown objects from space. This is similar to what Adams does in Arrival.
Kevin goes to live with his sister named Amy after her husband John dies. Those just happen to be the names of Jason Ritters real life father and step-mother actor John Ritter and Amy Yasbeck.