Friends in High Places - S10-E8
Factual error: Police Officer Troy was taken into a room by Sgt Regan to be interviewed. He has one Sgt stripe on one sleeve. He's a police officer, not a Sgt.
Dedication - S1-E15
Factual error: When the ambulance pulls up to the hospital after Frank is shot, it is a Chicago Fire Department ambulance, not New York. (00:02:10)
Factual error: When Henry is first handed the business card for Ajax Inc., it has an address of 542 W 96th St. Later in the episode, when Henry is supposedly standing outside the building Ajax is located in, you can see the reflection of Radio City Music Hall behind him, which is in the heart of Midtown Manhattan, nearly 4 miles away from the Upper West Side address on the card.
Fresh Start - S6-E15
Factual error: The NYPD Sergeant in uniform speaking to Danny only has Sergeant stripes on the left sleeve of his uniform. An NYPD Sergeant has stripes on both sleeves. (00:03:14)
Factual error: Danny shoots Frank's revolver, and as he continues to shoot, you hear the sound of a casing hitting the floor, which shouldn't happen since it's a revolver being fired. (00:11:46)
Fog of War - S10-E14
Factual error: During the funeral towards The End of the episode, both Jamie and Eddie are wearing white shirts with their dress uniforms. In the NYPD, only Lieutenant and above wear white shirts, like the show has portrayed. The color doesn't change for the dress uniform. (00:38:35 - 00:41:14)
Factual error: At The End of the episode, Mayor Poole is on TV discussing the recent police shooting. He refers to officer Meeks as a shooting death. Officer Meeks was wounded in the neck with spine injuries and retired medically.
Officer Down - S1-E4
Factual error: Danny and Jackie Curatola are with ESU to make an arrest at a garage. They are behind cover with their weapons drawn. Although there is no suspect shooting at them, both Danny and Jackie have their fingers on the trigger, which is against police training unless you are going to engage a subject by shooting your weapon. The ESU officer right next to them does not have his finger on the trigger. (00:38:04)
Factual error: The badge the ATF Special Agent is displaying on his suit jacket is wrong. It's the wrong shape and style of an actual ATF Badge. (00:02:57)
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.