This is a reunion between Nancy McKeon and Kim Fields, who starred together on "The Facts of Life".
Having a wedding in their series finales is just one of the many things The Division and CBS' The District have in common. Here's some more:
1) Both start with "The Di" and their second words both have 8 letters.
2) Both are police dramas.
3) Each started in the same season (2000-2001) and ended in 2004.
4) They have shared an astonishing amount of guest stars.
This episode is sometimes referred to inn TV listings as "Zero Tolerance (2)".