Another 320 words on the same little dialogue, still very much in Zelenka's POV...

"And where the fuck did you appear from? Quite. Literally." Given that both the contraption and Radek had - presumably - appeared out of nowhere, the gunslinger has a point. But Radek is not nearly as stupid as his Chief Science Officer likes to say on occasion, and knows that telling this terrifying man with his menacing - if disturbingly, genuinely historical-looking - gun the truth is not a good idea until he has a better idea of where he is.

And, as he begins to wonder, when he is.

And what the truth actually is, which Radek has been involved in the Stargate program long enough to know is not always what it appears to be. It is usually much worse.