Secret Service Agent analyzes Colorado attack

A former Secret Service agent and expert on premeditated attacks analyzes the Colorado theater massacre. He says this was carefully planned and carried out and there was a level of sophistication that was disturbing. He says this took time to plan and there is a trend emerging here. For more on this story watch Jane Velez-Mitchell weeknights at 7pm ET on HLN For more informaton please visit www.hlntv.com