I have an object at two zero zero thousand feet, four zero zero zero miles an hour.

8 seconds sound clip from the The Day the Earth Stood Still (1954) classic radio play.

You can hear this line at 00:04:26 in the radio play.

Quote context

[...]

- This is Kalkipur, India.

- This is Radio Luxembourg!

- The American radar screen quickly confirmed the fact that there was nothing wrong with the British radar...

- There was something very gravely wrong forty miles out in space, far above the earth.

- Luckton at Ferris to Baker, Ferris to Baker.

- I have an object at two zero zero thousand feet, four zero zero zero miles an hour.

- Then it was here. Incredibly, it was here! Burning down through the sky over Washington, D. C., hovering over the Mall. Descending.

- They're here! They've come! They're here, they're here!

(ALIEN SPACECRAFT LANDS NOISILY)

- Not a sound. Stillness. Not a move from the cordon of tanks and armored cars and troops in full battle dress.

[...]