Walkthrough:Battle the Chopper
"Battle the Chopper" was a job for The Murray in "A Starry Eyed Encounter" of Sly 2: Band of Thieves. The goal was to destroy Rajan's security chopper to ensure a successful heist.
Walkthrough
To reach the job beacon, pass through the front gate and go up the stairs to the right of Rajan's statue. Go left, when inside the tunnel, to reach an exterior walkway. Bounce on one of the red awnings to reach the rooftop with the beacon, which is beside the turret.
The turret must be unlocked before you can battle the chopper. Use Murray's strength to push the switch up (press either 
, 
, 
, or 
in any order). When controlling the turret, aim with 
and use 
to fire, but beware that firing for too long will cause the guns to overheat, and you will have to wait for them to cool down. This can leave you vulnerable to taking damage from the chopper's missiles, which it will fire once you strike the chopper the first time. Try tapping the trigger constantly to keep your heat levels at a steady rate.
It does not take long for the chopper's missiles to reach you; shoot them down as soon as possible. Focus on the missiles more than the chopper, as Murray needs to keep the turret in one piece in order for him to destroy the chopper. Be careful though because as the chopper loses more and more health, it will fire more consecutive missiles, and it will increase its rate of fire. Continue firing at it until it goes down.