My boss is retiring and one of my new bosses has already started and so far it's been ok. I'll have another new boss starting in a couple months.

I want to look eager to work but not eager to the point of ass kissing. I know that with new management you can often get change trickling down and the last thing I want changed is my position at the company. My current boss says I'm doing a great job, but she's leaving.

How do I cement my role at this "new" firm?