until now owners only had to register their aircraft at the time of purchase. the faa would send out notices every three years asking them to update their contact info, about it was voluntary. there was no punishment for failing to comply. more than a third of all owners ignored the request. in many cases the feds cannot say who owns a particular plane or whether that plane is still in the air. a battle playing out in mexico's raging drug war. federal police locked in a 24-hour gun battle with cartel gunmen. gunmen blocked all five roads leading into the town. and used burning vehicles as barricades. when it was all over five people were killed including a top cartel leader, an 8-month-old baby and two police officers.