Troops will set traps and assist local hunters but won't use firearms. Over 100 people have been injured and at least 12 killed in attacks since April.
In a training first, an Army National Guardsman used a tablet to control Sikorsky's optionally piloted Black Hawk and plan its task during an exercise.
As the Trump administration engages in a campaign of mass deportations, military experts and veterans say immigrant troops and their relatives are targets.
The goal of the hearings is to pinpoint exactly what went wrong and how to avoid similar midair crashes between passenger planes and military aircraft.