I think Commander Strathmore is a misguided patriot. He is actually trying very hard to protect NSA’s mission being public to the whole world. He is always doing what he should have done. By send David to find if Tankado has left any sign of password after he died. He tries very hard, and he would pay any price, in order to find the pass code for the Digital Fortress. I think from the point view of American government I would think his actions and intentions were noble because he put a lot efforts to defend American government’s reputation.