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.
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.
The ADSB safety system has become a flashpoint as some have pointed to its likely lack of use by the helicopter as a potential cause of the Jan. 29 crash.