I know that engine... Steve!
6 seconds sound clip from the Dimension X - The Outer Limit by Graham Doar classic radio play.
You can hear this line at 00:10:08 in the radio play.
Quote context
[...]
- It's coming in behind us. Here it comes over the building!
- What crazy jockey is buzzing the field like that?
- Is that an Army plane, Charlie?
- I know that engine... Steve!
- That's impossible! That's his ship!
- Well there's no other model like that! It's Steve, all right!
- Elsie, give the order to check and refuel the rockets.
- I don't want anybody in here until I get Steve's reports. Bury any calls.
[...]