We begin with a serious cat and mouse issue. A 29-year-old man responsible for a breach of the nation's top secrets on the run tonight. As america's top spies are tracking him. This man who says he... See More
We begin with a serious cat and mouse issue. A 29-year-old man responsible for a breach of the nation's top secrets on the run tonight. As america's top spies are tracking him. This man who says he was once one of their own. Chief investigative correspondent brian ross takes us inside the high stakes hunt. Brian. Reporter: The prosecutors here are preparing formal criminal charges against snowden under the es peen naj act which could mean life in prison if caught and convicted. Game on between the formal intelligence inside and the spy agencies where he has once worked. He has gone rogue. He would know exactly how every phone call, credit card transaction, internet log on, airport check point and u.S. Surveillance program he revealed could be used to track him. He said from the start he knows that once he made the choice to inform the public about the programs that all of his options were bad options. It's safe to say that he won't be living a free and unrestraininged life. Reporter: Part of the life he left behind involves his long term girlfriend, lindsey mills, a pole dancer, a member of a hawaiien dance group. She moved with him from maryland to hawaii. Leaving her in the dark and lost at sea without a compass. Snowden told the guardian newspaper he sacrificed a lot to live in the u.S. You're living in hawaii, in paradise making a ton of money. What would it take to make you leave everything behind. Today in washington members began a series of top secret breeflgs about the program that he revealed. He was denounced by the speaker of the house. He's a traitor. The president outlined last week that these are important programs to help keep americans safe and give us tools to fight the terrorist threat that we face. Reporter: Officials tell abc news they are not convinced that snowden acted alone given the range of secret material he has made public. So every computer stroke he ever entered is undergoing scrutiny to see if there are undetected leakers on the job. Ifs convicted of es peen acknowledge, tallegations against him the maximum is life in prison. It's not treason? Reporter: The maximum penalty would be life in prison, not the death penalty. Brian ross, thank you. Overseas to the tear gas and
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