"There is something more powerful than each of us, a combination of our efforts, a Great Chain of industry that unites us. But it is only when we struggle in our own interest that the chain pulls society in the right direction..." - Andrew Ryan
- "Delivered in a flash!"
- ―Jet-Postal advertising motto
Servicing the working-class stevedores, fishermen, and security detail operating in Neptune's Bounty, Jet-Postal Substation II was in charge of the posting, receipt, sorting, handling, and delivery of mail to and from the fisheries, the security offices, and other businesses in the port. The post office was small yet efficient and operated out of the Upper Wharf directly across from The Fighting McDonagh's Tavern. Though a small part of the Jet-Postal network, the substation served an important duty to the citizens of Rapture.
The office is composed of a customer service area where citizens could attend to their postal needs with a substation worker at a point of sale window or rent out one of twenty lockers for larger packages. In addition to the shelves, couches, and writing desks, a Circus of Values machine is set up in the front area for customer use. Further back, is the employee working area, where substation staff worked at sorting and distributing incoming mail or sending outgoing mail from eight Pneumo Tubes. In addition to the Pneumo Tubes, there are also several rows of slotted shelves for storing citizens' mail until it has been picked up.
- Main article: BioShock
Jack needs to find and photograph three Spider Splicers with the Research Camera before Peach Wilkins will allow him entry into Fontaine Fisheries. After recovering the camera from the Wharfmaster's Office, Jack heads to Jet-Postal Substation II. The substation is a bloody and disorganized mess having fallen into disuse since the Civil War. Three corpses have been strung up from the ceiling in the front area of the substation. Most of the mail has been stolen or discarded on the floor, and only a few items remain on the sorting shelves.
Upon entering, a female Spider Splicer dangling from the ceiling will retreat to the back of the room while two Leadhead Splicers charge out. Hugging the right side of the right column will force the Splicers to come out from the doorway and make taking them down quick and easy. Heading straight into the rearmost area proves to be a trap, as a strategically posted Security Camera will set off an alarm unless quick action is taken. Meanwhile, the Spider Splicer will taunt the player, swoop down, and begin her assault. After the Spider Splicer has been dealt with, another Splicer will appear in the front part of the substation.
Andrew Ryan's Audio Diary Death Penalty in Rapture is located on one of the writing desks in the front area of the substation. A camera and some loose Film located throughout the office total about twenty photos. On top of the desk at the point of sale window are three Pep Bars and a cash register containing thirty four Dollars. The mail slots in the back contain sixteen dollars, 00 Buck, Arcadia Merlot, three boxes of bandages, Pistol Rounds, Armor-Piercing Pistol Rounds, and a Proximity Mine. There are some canisters of coffee, Machine Gun Rounds, and a first aid kit located on top of a few shelves throughout.