The Drop - meaning of "get to" [on hold]

The Drop - meaning of "get to" [on hold]

What does "get to" mean in the following excerpt taken from the book "The
Drop" by Michael Connelly? The "Get to" is at the end of the excerpt. I
have written it in bold. Thank you very much for the help.
"Harry," the lieutenant said. "Hang back a second." Bosch looked at Chu
and raised his eyebrows. He didn't know what this was about. The
lieutenant came around from behind her desk and closed the door after Chu
and Marcia had left. She stayed standing and businesslike. "I just wanted
you to know that your application for an extension on your DROP came
through. They gave you four years retroactive." Bosch looked at her, doing
the math. He nodded. He had asked for the maximum — five years
non-retroactive — but he'd take what they gave. It wouldn't keep him much
past high school but it was better than nothing. "Well, I'm glad," Duvall
said. "It gives you thirty-nine more months with us." Her tone indicated
that she had read disappointment in his face. "No," he said quickly. "I'm
glad. I was just thinking about where that would put me with my daughter.
It's good. I'm happy." "Good then." That was her way of saying the meeting
was over. Bosch thanked her and left the office. As he stepped back into
the squad room he looked across the vast expanse of desks and dividers and
file cabinets. He knew it was home and that he would get to stay — for
now.