articleA Las Vegas police officer who was a Marine veteran was killed Tuesday while responding to a report of an armed person, authorities said. MULTIPLE PEOPLE KILLED IN SHOOTING AT IDAHO IN-N-OUT RESTAURANT, SUSPECT DEADPolice said officers located the armed suspect near Mountain Vista Street and the Interstate 11 underpass. "A 30-year-old Las Vegas police officer was then worked on heroically by the Clark County Fire Department, other officers and EMS," McMahill said. (Las Vegas Metropolitan Police Department)"Unfortunately, our officer has passed," the sheriff continued. (Las Vegas Metropolitan Police Department)Other law enforcement agencies also mourned the officer’s death.