The location of the office is on Slough Avenue. Slough is the location of the UK version of The Office.
There are several Godfather allusions in this episode. It's about someone leaking vital information outside the company, like someone betraying the Corleone mafia family as happens in the second Godfather. Dwight says at least two lines from that series, "I'm not dumb. I'm smart." and "Make 'em an offer they can't refuse."
When Michael makes the "And don't call me" joke, he follows it up by saying "Airplane 2". This is a joke at the fact this is the second time Michael uses this reference, the first being in Valentine's Day (2006), when he follows it up by saying "Airplane."
Jo and Michael travel to Castle & Cook Aviation to have a meeting on Jo's jet. Castle & Cook is a real FBO located at the Van Nuys airport; however, this location is roughly 2500 miles away from Scranton and the plane never leaves the ground.
When Dwight meets with Jo, he hands her a list and recommends the following people be fired. The list contains every employee's name but his own. Gabe's name cannot be seen, however the list may go on longer than can be seen, possibly Jo's hand blocks the bottom.