Lasalle, Isler, and Pride find themselves running for cover when an Apollyon helicopter attacks during hostage negotiations.

The negotiations for Isler's release are disrupted by gunfire from a helicopter raining down on the militia camp.

An Ossetian girl catch the trio in her family's barn, but Lasalle buys her off to create a distraction so they could escape.

Lasalle and Pride get a ride in the vehicle of Luka Osman, Ryan's local asset who is helping with the rescue mission.

Pilot Pete drops off Pride and Lasalle in South Ossetia then smartly leaves before his plane gets shot at.

Pride and Lasalle plan to pass themselves off as Canadian doctors when they travel to South Ossetia to rescue Isler.

Lasalle and Pride infiltrate the war-torn nation of South Ossetia in an effort to ransom Isler from a local militia.

Pride and Lasalle travel to war-torn South Ossetia to locate FBI Special Agent Raymond Isler on NCIS: New Orleans. "The River Styx, Part 1" is the 23rd episode of the show's fifth season.