Logan McClelland: Did he have to shoot Big O worker Bradley Blehm during parking lot spat?

This week, we've been following eighteen-year-old Logan McClelland's arrest for first-degree murder of a Big O Tire employee later identified as Bradley Blehm.

Now, the El Paso Sheriff's Office has released an arrest affidavit in which McClelland claims he "had to" shoot Blehm as he argued with the teen's father -- although he later accuses his dad of trying to throw him under the bus.