How many aircraft do you see below? The correct answer is 3. Sort of. In the future, especially if BAE Systems has any say in the matter, you may see a aircraft made up of smaller aircraft, increasing flight range and mission versatility.
Traveling together saves fuel, and increases flight range. Facing an enemy, they can split up, making the fight three-against-one. Or one can do recon while the other two
Let's go to the (very cool) videotape: