Who opens episodes of The FBI Files with an introductory narration?
James Kallstrom, former head of the FBI New York office.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Who opens episodes of The FBI Files with an introductory narration?
### Input: 
### Response: James Kallstrom, former head of the FBI New York office.