Retired FBI Agent-CAST / Cell Site Record Expert

Specialties & Experience of this Expert Witness

Additional Information

Mike Easter is a retired FBI Special Agent with over 25 years of investigative experience and over a decade of experience as an FBI National Asset with the Cellular Analysis Survey Team (C.A.ST.). He worked thousands of cases involving the analysis of mobile device location information to locate victims and subjects of kidnappings, homicides, robberies, other violent crimes, and national security matters. Over the course of his career, he designed and created the curriculum the FBI used to teach law enforcement partners the methodology for using mobile device location information to find the missing, the lost, and the hiding. Further, he has been an expert witness in over 250 criminal cases and taught the FBI expert witness testimony course for over a decade. He pioneered the FBI's Critical Incident Response course, equipping investigators with essential skills in real-time crisis management and advanced investigative techniques. As an FBI instructor, he honed his ability to deliver complex information effectively to diverse audiences, fostering strong rapport and trust even under pressure. He taught this course for approximately ten years to FBI Special Agents, and Local and State investigators throughout the United States. This course significantly enhanced their operational capabilities in critical incident scenarios. Earlier in my career, for approximately 10 years, I coordinated a Multi-Agency Gang Task Force in Southern California. In this role, I collaborated with numerous local law enforcement agencies, responding to, and contributing to investigations into dozens of gang-related homicides, shootings, stabbings, robberies, kidnappings, and other violent street crimes. As the lead Case Agent, I directed the indictments, arrests, and prosecutions of hundreds of documented gang members, earning recognition and awards from state law enforcement agencies and the U.S. Attorney’s Office for my investigative achievements. Early in my career, for approximately 10 years, I coordinated a Multi-Agency Gang Task Force in Southern California. In this role, I collaborated with numerous local law enforcement agencies, responding to, and contributing to investigations into dozens of gang-related homicides, shootings, stabbings, robberies, kidnappings, and other violent street crimes. As the lead Case Agent, I directed the indictments, arrests, and prosecutions of hundreds of documented gang members, earning recognition and awards from state law enforcement agencies and the U.S. Attorney’s Office for my investigative achievements. For the subsequent 11 years, I partnered with homicide detectives from the Los Angeles Police Department, Los Angeles County Sheriff’s Department, other law enforcement agencies, and the Los Angeles District Attorney’s Office with the investigation and prosecution of thousands of homicides, robberies, kidnappings, and other major critical incidents. My work spanned Los Angeles County, the United States, and internationally. Notable major domestic and international investigations I contributed to include: • December 2015 San Bernardino, CA mass shooting/homicide/terrorism • October 2017 Las Vegas, NV mass shooting/homicide • December 2019 shooting death of Cali, Colombia’s top organized crime prosecutor • January 2021 RNC/DNC pipe bomb investigation • January 2021 U.S. Capitol investigations • November 2022 Moscow, ID quadruple homicide Further, because of my investigative contributions I received the FBI Medal of Excellence Award in 2018 for my outstanding and exceptional performance in support the of the FBI Criminal Investigative Program and again in 2024 for my exceptional contribution to developing the FBI training curriculum.