Tracy Howe has played three different roles over the course of the series:
- Episode 1.22 Tuxedo Hill (2002) - Declan
- Episode 1.20 Badge (2002) - Declan
- Episode 1.6 The Extra Man (2001) - Leon
- Episode 1.4 The Faithful (2001) - Declan
- Episode 1.3 Smothered (2001) - Martell
- Episode 1.2 Art (2001) - Martell
Robert Clohessy (Phil LeGrand) also played the role of Lt. Roger Lemoyne in episode 5.20, To the Bone (2006).
Robert Clohessy (Phil) went on to a long standing role of Sid Gormley in "Blue Bloods"