but attorney jim calle who's represents agents accused of misconduct, including cross-border shootings says there's nothing to hide. >> in the vast majority of the cases it is very clear cut in the sense of there is a deadly force threat made against an agent and the agent has to resort to the use of deadly force in response. border patrol agents are subject to at least 5 levels of scrutiny every time they pull the trigger. their conduct is so scrubbed by the time two years and three years past which is sometimes the length of time it takes for these investigations to wrap up. because it takes so long, people think the process is corrupt. they think that agents don't have no accountability for their use of deadly force. people start to speculate look, border patrol, they can pull a gun and shoot and kill people and it doesn't matter. >> but former border patrol agent ephraim cruz says a lack of accountability is actually the crux of the problem. he was an agent for almost 10 years in the tucson sector. disturbed by what he described as a pattern of cruelty among his colleagues withhold