The aircraft carrier
A jet comes arcing down low, spraying you with cannon shots and nearly knocking your machine off balance. The plane passes feet above you, now travelling 500 miles-an-hour and screeching like a banshee, this noise fills your ears 'til it's all you can hear. You bring the turret barrel up right as the plane is directly above you and strike it right in the middle. The jet blows up, debris cascading everywhere, and the boom leaves your ears aching like hell. Home run.