BROCKTON (CBS) – Rebecca Greer loved her job as a Brockton police officer. But for her husband, there were always concerns.

“I worried, because Brockton’s not Mayberry,” explains Greer’s husband David Heidke. “I always worried about her on the road because you could hear gunshots.”

But Becky, as friends and family called her, came from a family full of law enforcement and members of the military.

In fact, she and Heidke met when they were both MPs in the National Guard.

He says Becky entertained the idea of working for police departments throughout the country.

Ultimately, she decided to come to her hometown of Brockton, where she actually had job offers from both the police and fire departments.

“I think it was about helping people,” says Heidke. “She really wanted a job in public service.”

A couple months ago, Greer fell at home and broke her ankle. Doctors kept a close eye on her recovery, since she had a long-standing condition that could cause blood clots. But with time, she was getting better and was making plans to rejoin the force.

In fact, this Wednesday, the 4th of July, the couple was headed to the movies.

But once they got to the cinema, Becky got lightheaded and short of breath. She collapsed in the car.

“It was like she was there one minute and gone the next,” says Heidke.

Officer Becky Greer was 35 years old.

“I don’t know what I’m going to do,” Heidke offers. “She was supportive of anything I wanted to do. I couldn’t have done half of what I’ve done in any of my endeavors without her. And she was that way with everybody.”

Becky’s death was caused by a blood clot in her lungs.

It’s an overwhelming thought for the man who used to worry about her safety on the streets.

“Everything I did that had any joy in my life, I did with her,” Hedike explains. “And i don’t know what I am going to do.”