Memo written by federal agent was critical of the botched gun - running operation . IG ##O says the leak was intended to damage reputation of agent . Top federal agent in Arizona at the time said he did not think he did anything wrong .
Memo written by federal agent was critical of the botched gun-running operation . IG report says the leak was intended to undermine credibility of agent . Top federal prosecutor in Arizona at the time says he did not think he did anything wrong .