O'Brien played college football for the University of Florida, and thereafter, he played professionally for the Pittsburgh Steelers of the NFL.
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: O'Brien played college football for the University of Florida, and thereafter, he played professionally for the Pittsburgh Steelers of the NFL. ### Response: .