Assistance Validated List Gang Violence Involvement in Myrtle Brown's Homicide Washington Field Office Murder Probe Airplane Incident Threat Assessment Special Agent Stephanie Minor Potential Federal Violation New York State Police Arrest Baltimore Rochester Police Michigan State Police Suspicious activity Crime Scene Local Agencies Detention Custody Bossier Parish Sheriff's Office Field Offices U.S. Attorney's Office FBI Arrest Criminal Division Joint Terrorism Task Force Federal Grand Jury Witness Testimony Zero Leads Department of Justice IRS Criminal Investigation