this is one of my favorite builds and flys amazingly. I'll be adding more over time. AG1/AG2 will open pilot/cargo doors. AG3 are lights. AG3/4 with trim are the hoists located on both sides. AG6 opens a hidden cargo space you can use for whatever youd like. Now, AG7 is the fun one, itll activate the rear eng for increased speeds at level flight, half trim/vtol is one of my favorite spots, additionally itll extend the boom and yes you can refuel mid air with this, ive done it loads of times now, it takes practice lol. all flight controls are the same, throttle spins blades vtol for lift. if you want to land on a ship just press landing gear and little pistons will hold it in place, have fun =)