Guest star Howard Culver's fifth and final appearance on the show, he portraying a different character in each appearance.
Mac's wife's name is mentioned as being Mary.
Mac mentions having "kids". Only one son, Bill, had been mentioned and shown previously, in Keeping Tabs (1973), he's again mentioned this time.
The two way radio that Mac handed to Reed at the hostage situation was an actual Handie Talkie FM Radio HT 200 made by Motorola. The name Motorola was covered.
One of the few instances when the police are seen using mobile radios, in this case Malloy in the grocery store.