The B-2 Spirit stealth bomber is the most advanced weapons system ever built — a $2 billion flying wing that can reach any target on Earth, penetrate every air defense system currently in operation, and deliver precision munitions without ever appearing on a radar screen. But how does it actually work? In this video, we go deep inside the B-2 Spirit — from the rotary launcher weapons bay that spins eight two-thousand-pound bombs into position, to the radar-absorbent surface coating that makes the aircraft functionally invisible, to the flight control computers making a thousand corrections per second to keep a tailless aircraft stable at cruise altitude.This is not a general overview. This is the full picture — the weapons assembly process, the stealth surface repair system, the hot-pit refueling procedure, the JDAM targeting sequence, and the final seconds of a guided bomb's flight path

Source: How the B – 2 Spirit Actually Works