M. Roy Jackson was an early professional football player who played for the Duquesne Country and Athletic Club.
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: List the MITRE techniques contained in the text. ### Input: M. Roy Jackson was an early professional football player who played for the Duquesne Country and Athletic Club. ### Response: .