Star Born by Andre Norton

They were airborne once more, but Raf was not pleased. In the seat beside him, which Captain Hobart should be occupying, there now squirmed an alien warrior who apparently was uncomfortable in the chair-like depression so different from the low stools he was accustomed to. Soriki was still in the second passenger place, but he, too, shared that with another of the men from the city who rested across bony knees a strange weapon rather like a Terran rifle.

No, the spacemen were not prisoners. According to the official statement they were allies. But, Raf wondered, as against his will he followed the globe in a northeastern course, how long would that fiction last if they refused to fall in with any suggestions the aliens might make? He did not doubt that there was on board the globe some surprise which could shoot the flitter out of the air, if, for example, he adjusted the controls before him and bore west toward the mountains and the safety of the space ship. Either of the aliens he now transported could bring him under control by using those weapons, which might do anything from boiling a man in some unknown ray to smothering him in gas. He had not seen the arms in action, and he did not want to.