Walkthrough:Aerial Assault
"Aerial Assault" was a job for Bentley in "He Who Tames the Iron Horse" of Sly 2: Band of Thieves. The goal was to clear out the aerial defenses protecting Bison's second iron horse train.
Walkthrough
To reach the job beacon, head up to the mountain, where the satellite dish is. As you approach the marker, keep watch for any flashlight guards that can appear in your path, as you are at risk of falling off the cliff if you are hit.
Catching up to the train will be much easier using Adrenaline Burst, and you can even glide directly to the caboose using the Hover Pack. Once he is on board, Bentley will ride at the back of the caboose and deploy his RC chopper. Press 
to drop bombs, and 
to fire the new cannon.
The first carriage appears to have just four guards, so take them out with just a few bombs. At this point, however, two missile launchers attached to the sides of the carriage will activate. They will shoot single bombs that will not home in on the chopper but will erupt into multiple ones (a countermeasure if the single bombs fail to hit you), and dodging them may require some tricky maneuvering. It will take a few bombs each to put these launchers out of commission.
As you progress forward, you will encounter a criss-cross of enemy planes, which can be defeated with single cannon shots. However, once they are dispatched, two enemy choppers will appear, which can fire at the chopper and take a few missiles to destroy. Once they are out, you will move on to the next car.
As you take out the next two guards, four rocket launchers will activate this time. Bomb them and then prepare to shoot down another group of enemy planes, followed by four more choppers. The next car has quite a few planes and two rocket launchers; destroy the planes first to stop them from crashing into you, before concentrating on the launchers.
When you reach the final car, a few planes will be sent in, so fire and move onto the rockets and choppers. Destroy the choppers first so that they do not fire before you bomb the rockets. This is the final wave to clear before the job is complete.