Shane knows where the Akurans are keeping the hostages and says to meet him at the Latte Owl, which is marked on your map. Get on the truck in the parking lot, noting that this is similar to when you helped out Shane in Stealing from the Enemy. The truck's health is at the top of the screen and remember that it might be wise to just go crazy with the shots, instead of trying to aim them.
Whenever the truck turns down an alley, it will stop in front of the harbor. Shane says that Jenny found out that the Akurans are holding the hostages in some containers. There's a total of 3 containers on the piers, all surrounded by Akurans, so clear them out and use L3 to pinpoint the hostages (they appear green).
When the coast is clear, go up to the container's door and press the Touch Pad to open it (the Touch Pad icon will be there, so you know where to open the containers). Once all three containers have been opened, you'll receive a call from Brent, who says he's in some alleyway.
However, a bunch of DUP Agents show up on the coast and you will need to evade them for now (you can fight them all if you want, but you don't get anything for doing so). Head to the marker on your map to meet up with Brent, although there's a little twist that happens, bringing an end to this mission.
