Jealously warranted?

Sarah💜
So I have a question. My husband and I are EMS. He's a volunteer firefighter and I'm a First Responder. My husband has a full time job also. I'm a stay at home mom right now. I love being an EMR and I want to keep growing in the field to get a job working on an ambulance. 
Here is the issue. My husband doesn't want me working on an ambulance because I would have to stay at a station with "guys" other emts. There are women there also. But he feels that it's an environment that breeds infidelity. I have never cheated in a relationship. And I can be jealous too. But I am kinda sad that I feel I am giving up something that I have always wanted to do. My question is should I be feeling disappointed in his feelings? I can't go forward with it since this is how he feels.