Brendan O'Hearn testified about performing CPR on Sean Collier after responding to an officer-down call near MIT. He described Collier's condition, the continuing resuscitation efforts, and his subsequent work logging access to the crime scene.
Law enforcementCambridge Police Department
Brendan O'Hearn
Cambridge police detective who previously served as a Watertown patrolman.
Appeared2015 Federal Trial
57 lines·1 proceeding
About
Brendan O'Hearn testified for the prosecution on Day 31 about responding to the officer-down call near MIT on April 18, 2013. He said he and Officer Keno diverted from a robbery response and found Sean Collier on the ground with MIT officers attending him.
O'Hearn described performing chest compressions while Keno provided ventilation. He observed a head wound, blood, and a gurgling sound, but no reaction to compressions. Other officers assisted, and CPR continued through fire personnel's interventions and Collier's transfer to an ambulance.
After the ambulance departed, O'Hearn logged people already at the taped-off scene and subsequent arrivals, then handed the log to Officer O'Callaghan. He qualified his recollection of the initial officer count and CPR duration, could not recall which hand was injured, and could not explain the exact cause of blood in the chest area. The defense declined questioning.
Trial Record (1)
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