The Strength of the Wolf - S3-E4
Audio problem: One of the team members shoots a sentry on board a ship off a ladder attached to the deck hanging off the side of the ships hull. He shoots an unsurpassed Glock and the shot sounds suppressed. A muzzle flash can be seen too, another indicator it's unsuppressed. Their element of surprise would have been totally eliminated had this really happened. They've used suppressors before on their sidearms - doesn't make sense why they wouldn't now. (00:31:00)
Ghosts of Christmas Future - S1-E4
Audio problem: One of the target's bodyguards is watching Jason and his team board a civilian plane, and he calls his boss and says "od jechal" which means he drove away. He should've said "odlecieli" which means they flew away. Also his Polish "od jechal" is heavily accented, spoken like he's speaking Arabic or something with a strong "H" accent. There's no way he's fluent in Polish. He also could've said "od frunal" which means flew away, but it's reserved for a bird or a small flying creature. (00:29:50)
Answer: They should be wearing balaclavas. They do such operations usually on foreign soil.