departments across the country. covid is now killing more law enforcement officers than guns, vehicles, or any other threat they face in the line of duty. here s cbs jeff pegues. reporter: police officer christopher cockburn lost his battle against covid-19 last month. tell me about your dad. well, he was a police officer for over 30 years. reporter: kayleigh cockburn, his daughter, says he loved his job. when did your family find out that he had covid-19? on my 30th birthday, august 14. quite a birthday. reporter: exactly a month later, on september 14, at the age of 59, he was dead. i miss him a lot, yeah. ( sirens ). reporter: covid is now the leading cause of death for the men and women in blue. 716 officers since march of 2021. still, there is a reluctance to get vaccinated. in memphis and louisville, just 47% of officers have been vaccinated. and in philadelphia, just 13% of