A district judge told Hector Escalante the citizens of Oklahoma City are "lucky to have you off the streets," before giving him a life sentence for ambushing Officer Katie Lawson in August of 2010.
Escalante, 19, pleaded guilty in September to ambushing Officer Lawson with an AR-15 rifle. Hector Mercado, 18, received three years for his role in the ambush, reports The Oklahoman .