Until, at age 21, the prodigal son returns and is anointed the new CEO of Stark Industries.

9 seconds sound clip from the Iron Man (2008) movie soundboard.

You can hear this line at 00:04:56 in the Blu-ray version of the movie.

Quote context

[...]

- Even from an early age, the son of legendary weapons developer Howard Stark quickly stole the spotlight with his brilliant and unique mind.

- At age four, he built his first circuit board. At age six, his first engine.

- And at 17, he graduated summa cum laude from MIT.

- Then, the passing of a titan.

- Howard Stark's lifelong friend and ally, Obadiah Stane, steps in to help fill the gap left by the legendary founder...

- Until, at age 21, the prodigal son returns and is anointed the new CEO of Stark Industries.

- With the keys to the kingdom, Tony ushers in a new era for his father's legacy,

- Creating smarter weapons, advanced robotics, satellite targeting.

- Today, Tony Stark has changed the face of the weapons industry by ensuring freedom and protecting America and her interests around the globe.

- As liaison to Stark Industries, I've had the unique privilege of serving with a real patriot.

[...]