the case against amber portwood goes to the district attorney. faces up to three years in jail and $10,000 in fines. mtv says they are cooperating. and hope for a quick and fair resolution. critics say, while fighting may not be staged, show producers know it sells. >> reality producers want extreme behavior. that's what gets people talking. that's what gets people buzzing. >> reporter: so, until viewers change the channel, this harsher reality is here to stay. for "good morning america," yunji de nies, abc news. >> we almost feel bad showing it again. >> i know. >>> all right. let's check in with juju chang for a look at the morning's headlines. >> good morning, everyone. we're following that breaking news overseas. a powerful explosion at new zealand's largest coal mine. 27 workers are trapped underground. witnesses say just before the blast, the electricity went out, possibly creating a dangerous gas buildup inside. rescue teams are waiting to hear if the mine is safe to enter. >>> president obama is in portugal today, to meet with nato allies