The mayor of Chicago, governor of Illinois and a sea of uniformed officers were among those who gathered on a cold, snowy Monday for the funeral for a young Chicago police officer killed in the line of duty.
Officer Samuel Jimenez, 28, was fatally shot in the neck while trying to protect employees and patients during a shooting at Chicago's Mercy Hospital on Nov. 19, police said.
"He was just doing what came natural to him. He stepped into action because he sensed people were in danger," Chicago Police Superintendent Eddie Johnson said at the funeral service.
"He heard the call on the radio and saw the tremendous police response, those officers rushing to the aid of the injured to defend the defenseless in a despicable act of violence," said Johnson. "No doubt that if it wasn't for Officer Jimenez and the brave men and women who ran alongside him that day, countless numbers of additional lives would have been lost or affected."
"He was a hero," Johnson said, adding that Jimenez "made the ultimate sacrifice."
(MORE: 'A senseless loss of life': 3 victims of Chicago hospital shooting mourned)Jimenez is survived by his wife and three children. Johnson vowed to always be there for them, "from birthday to graduations."
To Jimenez, Johnson said: "I know you're watching. Many Chicagoans were saved because of you. Thank you so much for your dedication, commitment and sacrifice... Sam, may you rest in peace."
Chicago police officer Rafael Villegas, overcome with emotion, said Jimenez "was one true friend."
The two met in the Chicago Police Academy in February 2017, Villegas said.
Jimenez served on the force for nearly two years, The Chicago Tribune reported.
(MORE: 'I pray for our cops every day': Law enforcement deaths spiking, guns No. 1 cause)"When he spoke about his amazing wife, Crystal, just the sound of his mentioning her name spoke volumes. His eyes would light up any time you asked about his lovely kids," Villegas said. "His family was his driving force."
Jimenez was a "hard working man," Villagas said, who previously worked at Dunkin' Donuts, bussing tables and delivering mail.
Villegas called his fallen friend a "loving husband, father, son and friend, and lastly a heck of a police officer."
The suspected gunman who murdered Jimenez also killed hospital emergency department physician Tamara O'Neal, 38, and Dayna Less, 24, a first-year pharmacy resident-in-training, according to police.
O'Neal had recently broken off her engagement with the suspected gunman, Juan Lopez, who came to the hospital to take the ring back, according to police. Lopez also died in the shooting.
Illinois Gov. Bruce Rauner spoke at Monday's funeral, pledging "to always remember the life, the service, the dedication and the sacrifice of Sam Jimenez. We will never let his memory die.”
To the officers gathered at the service, Rauner called their job the "most notable calling of all humanity. We owe you an incredible debt of gratitude. It is an honor for me to serve you."
Chicago Mayor Rahm Emanuel also spoke at the service, calling Jimenez "someone the entire city of Chicago will always look up to."