WITNESSES:

Jaeson Jones
Private Citizen, Former Captain of Intelligence and Counter-Terrorism, Texas Department of Public Safety

Jessica Vaughan
Director of Policy Studies, Center for Immigration Studies

Derek Maltz
Private Citizen, Former Special Agent in Charge, Special Operations Division, Drug Enforcement Administration

Vanda Felbab-Brown, PhD
Director, Initiative on Nonstate Armed Actors, the Brookings Institution

Witness testimony can be found here.