Consider the question. Jason made his first cinematic appearance in the original Friday the 13th on May 9, 1980. In this film, Jason is portrayed in the memories of his mother, Mrs. Voorhees (Betsy Palmer), and as a hallucination of the film's protagonist, Alice (Adrienne King). Though the character makes no contemporary appearance onscreen, he propels the film's plot -- Mrs. Voorhees, the cook at Camp Crystal Lake, seeks revenge for his death, which she blames on the camp counselors. Jason's second appearance was in the sequel, Friday the 13th Part 2 (1981). Revealed to be alive, an adult Jason exacts revenge on Alice for decapitating his mother in the original film. Jason (Steven Dash and Warrington Gillette), returns to Crystal Lake, living there as a hermit and guarding it from all intruders. Five years later a group of teenagers arrive to set up a new camp, only to be murdered one by one by Jason, who wears a pillow case over his head to hide his face. Ginny (Amy Steel), the lone survivor, finds a cabin in the woods with a shrine built around the severed head of Mrs. Voorhees, and surrounded by mutilated corpses. Ginny fights back and slams a machete through Jason's shoulder. Jason is left for dead as Ginny is taken away in an ambulance. In Friday the 13th Part III (1982), Jason (Richard Brooker) escapes to a nearby lake resort, Higgins Haven, to rest from his wounds. At the same time, Chris Higgins (Dana Kimmell) returns to the property with some friends. An unmasked and reclusive Jason kills anyone who wanders into the barn where he is hiding. Taking a hockey mask from a victim to hide his face, he leaves the barn to kill the rest of the group. Chris fends off Jason by slamming an axe into his head, but the night's events drive her into hysteria as the police take her away.

Where did jason voorhees get the hockey mask?
 If the answer is 'a victim'; explain the reasoning:
The relevant information to answer the above question is: Taking a hockey mask from a victim to hide his face, he leaves the barn to kill the rest of the group.