Retired LAPD Homicide Lieutenant. Law Enforcement and Security Best Practices Expert Witness. Adam Bercovici has 40+ years of law enforcement and security experience. Plaintiff and defense expert witness in law enforcement best practices and security/premise liability cases, use of force, positional asphyxia, officer-involved shootings, pursuit policy, K9 operations, police labor-hiring and retention and termination (including Brady issues), homicide, wrongful death, active shooter, and crowd management.