Jump into a UH1 gunner seat (press 3 before hitting fly) and fight off the drone swarm heading to attack a target.
youtube video for mission description here: https://youtu.be/h4dwx8Xmbwo

Very simple and fun anti stress mission, you are a door gunner in a UH1 Huey, and your job is to shoot down all the drones possible. You do not need to know how to fly the Huey to do this, just press 3 right away to go into the door gunner seat and have fun. remember the Huey is flying along so eventually the drones may pass it but there are 2 more hueys you can jump into.