Photos: Behind the scenes of 'The Tomorrow War' with Quincy's Mike Mitchell

Quincy native Mike Mitchell co-stars with Chris Pratt in the new alien-invasion flick "The Tomorrow War," on Amazon Prime July 2.

Quincy native Mike Mitchell co-stars with Chris Pratt in the new alien-invasion flick "The Tomorrow War," on Amazon Prime July 2.

Quincy native Mike Mitchell co-stars with Chris Pratt in the new alien-invasion flick "The Tomorrow War," on Amazon Prime July 2.

Quincy actor Mike Mitchell will be taking his mother, Corinne, to the premiere of his new movie, "The Tomorrow War."

Quincy native Mike Mitchell co-stars with Chris Pratt in the new alien-invasion flick "The Tomorrow War," on Amazon Prime July 2. Mitchell has spent the past eight months living back in Quincy, sleeping in his boyhood bedroom in his Wollaston family home.

Quincy actor Mike Mitchell on the set of the alien-invasion thriller, "The Tomorrow War."

Quincy's Mike Mitchell stands behind actor Chris Pratt in this scene from the movie "The Tomorrow War."

Quincy's Mike Mitchell and Mary Lynn Rajskub appear in a scene from "The Tomorrow War."

Quincy native Mike Mitchell and director Chris McKay during the filming of the alien-invasion thriller, "The Tomorrow War."

Quincy native Mike Mitchell and actor Sam Richardson take a break during the filming of the alien-invasion thriller, "The Tomorrow War."

Quincy native Mike Mitchell is hooked to wires during the filming of the alien-invasion thriller, "The Tomorrow War."

Quincy native Mike Mitchell on the set of the alien-invasion thriller, "The Tomorrow War."

Quincy native Mike Mitchell stands with his stunt double during shooting of "The Tomorrow War."

Quinc native Mike Mitchell on the set of "The Tomorrow War."

Quincy's Mike Mitchell poses on set with a replica of the alien seen in the thriller "The Tomorrow War."

Quincy native Mike Mitchell stands with his stunt double during shooting of "The Tomorrow War."

Quincy native Mike Mitchell as Sweaty Beard in a scene from "Desperados."