The Hangar allows you to purchase personal aircrafts or convert pegasus aircrafts to personal aircrafts for free. Sell system works the same, the more stock you have, the more vehicles/aircraft you will have to work with.
The more people you have in your organization helping you out, the better the Hangar will produce. Hangars generate fair amount of cash if you collect the same type of crates (50), similar to the CEO Cargo Crate missions, but may take a while depending on how much help you have. Bunkers can also allow researching upgrades for vehicles and weapons and enable you to own the MOC, which can let you do missions to unlock discounts for certain Gunrunning vehicles. Repeat the process 'till product is full (or not), then you can launch a sell mission, preferably with friends helping you sell since depending on how much stock you have, will give you a certain amount of vehicles to work with. Bunkers generate the most cash, they work like MC Businesses You do supply runs (Or purchase supplies to save time), then leave them to produce product.
