Aircraft Power Pack 2: Expansion for Microsoft Flight Simulator X Fly six of the most famous WWII Fighters in the beautiful world of Microsoft FSX Take aircraft into combat with Air Battles - Sky Defender Designed to just jump in and fly Extreme realism - tracer rounds, trailing smoke and fire, actual engines and battle sounds, and weather so real you'll swear you're actually there Historically themed and fully-scripted missions often involving over 400 airplanes!