Doing their jobs? The agents shot the guy as he was running away (toward Mexico). They knew he was unarmed because he had already tried to surrender. When one of their shots finally hit the guy and he fell to the ground, the agents walked away. For all they knew, the guy could have been bleeding to death, but they just left him there and headed back north. Then they hid evidence of what happened and failed to report it. That's not their job.
Do they deserve 20 years?
btw, I saw the prosecutor on Fox last night discussing the case.
That's the first that I heard the version you report. Do you have a link to that? Was that the prosecution's claim or is that undisputed fact? Thanks.