When Josh visits the retirement home to see his parents his dad tells him that his mom is too mad to see him. This had to be written into the dialogue because, sadly, Glenne Headly had died on June 8, 2017 due to complications from a pulmonary embolism. The entire first season of Future Man (2017) was dedicated to her memory. After the credits of each episode the words "In Memory of Glenne Headly" are shown. She will be missed.
This episode's title might be considered a prequel to 1979's Apocalypse Now.