Jyn Erso has a blaster, and she knows precisely how to use it -- which is what concerns Cassian Andor in this new sequence from "Rogue One: A Star Wars Story."

The clip, which debuted this afternoon during a live cast Twitter Q&A, highlights some of the initial tensions between the characters played by Felicity Jones and Diego Luna, not to mention the humor of Alan Tudyk's K-2SO.

"You're letting her keep it?" the former Imperial enforcer droid asks as they buckle up for a trip to Jedha. "Would you like to know the probability of her using it against you? It's high."

Directed by Gareth Edwards, the film is set prior to the events of 1977's "Star Wars," and follows a ragtag group of Rebels as they undertake a dangerous mission to steal the plans for the Galactic Empire's planet-destroying superweapon, the Death Star.

Opening Dec. 15 in the United Kingdom and Dec. 16 in North America, "Rogue One: A Star Wars Story" also stars Ben Mendelsohn as Imperial Director Orson Krennic, Donnie Yen as the warrior Chirrut Îmwe, Mads Mikkelsen as Jyn's father Galen Erso, Jiang Wen as assasin Baze Malbus and Forest Whitaker as Clone Wars veteran Saw Gerrera.