Frank Reagan: I'm the PC. I know everything.
Frank Reagan: And I don't have a Teflon suit. Everything gets to me. Every time one of ours is hurt, or jammed up, or he's in over his head, it gets to me. I just don't show it, 'cause I can't show it, 'cause nobody wants, or needs, a sensitive police commissioner.
Sid Gormley: OK.
Frank Reagan: So screw you!
Sid Gormley: Yes, sir. That an order, too?
Frank Reagan: Yeah, that's an order.
Sid Gormley: Screw me. I'm on it, boss.

Answer: It's the New York Police Department flag, created in 1919. The stripes represent the 5 boroughs and the stars the different towns that made up New York (including New York City itself).
Bishop73What about the other flag that is not the U.S. flag?
Please be more specific. Are you talking about the New York City flag?
Bishop73It is the Iowa State flag. At least in the episode from 1/22/21.
It wouldn't be the Iowa State flag. Plus the Iowa State flag is blue, white, and red. The flag I think they're talking about is blue, white, and orange.
Bishop73