on scene(в разных значениях, но особ. в фразе "скончаться на месте": The CHP says the motorcyclist died on scene and another person was taken to the hospital.4uzhoj)
cordon off the crime scene(After the victim was taken away by authorities, the police had to cordon off the crime scene with police tape until the forensics team arrived at 10pm.4uzhoj)
respond(Police were called to Thomas Jefferson University Hospital just after midnight in response to a report of a shooter on the ninth floor. ... When officers responded, ... they learned the certified nursing assistant (CNA) had been shot by another hospital employee, who left the hospital in a U-Haul van.cnn.com4uzhoj)