Trivia: Although Len Cariou plays Tom Selleck's father, he's only five years older than Selleck.
Trivia: There is a Blue Bloods and Sopranos connection through the actors and creators. The Sopranos' actors who played bad guys or had connections to the mob mostly played cops or good guys on Blue Bloods.





Answer: It's a common cop show plot device. If the police on the show always acted in the most logical way (i.e. not alerting a suspect to their presence) the show wouldn't have the opportunity for an exciting foot chase.