Our Authors

A member of the TREXPO Advisory Board, Sgt. Robert "Bob" O'Brien Cleveland SWAT Ret. is the founder of the R.J. O'Brien Group Ltd., a law enforcement training and consulting service that advises and trains a number of local, state, and federal SWAT teams.

Sgt. Robert Sisley gave 27 years to the Miami-Dade PD, where he supervised the agency's Tactical Communications Unit, overseeing voice communications equipment and planning. He has served on the FEMA Communications Target Capability Technical and National Emergency Communications Plan (NECP) working groups.

Roger served over 20 years with the NYPD, where he spearheaded the NYPD’s first dedicated facial recognition unit. The unit has conducted more than 8,500 facial recognition investigations, with over 3,000 possible matches and approximately 2,000 arrests. Roger’s enhancement techniques are now recognized worldwide and have changed law enforcement’s approach to the utilization of facial recognition technology.