Factual error: When they first bring Grueber into Castle, Sara states that "he is one of five people who can hit a target from half a mile away." Half a mile is 880 yards. Basically every person who has graduated from (or likely everyone who has been selected for) sniper school in any military in the world should be able to do this.
xx:xx:xxPrince Ly Squisher
Factual error: In several episodes (notably in Season 4 episode 13 - Chuck Vs. The Push Mix), General Beckman, the Director of National Intelligence, refers to "my superiors." First, the DNI reports directly to the President of the United States. Also, a Brigadier General would never be elevated to that position. Thus far, all of the DNIs have been civilians, but if a military officer were appointed (presuming this would be legal) it would certainly be a four-star General, who would likely immediately retire from the military and then be appointed to the position (David Petraeus taking the CIA Director appointment comes to mind).
Add timePrince Ly Squisher
Factual error: A recurring mechanism in the series is if the power fails the prison cells that are magnetically locked open immediately. No magnetic locks are designed like this. They would fail their initial purpose which is to provide physical security. If a power outage occurs it would take hours before the locks would be released.