Discuss it with a lawyer if you wish--but transgender has very few legal protections. Gay has some slight protection--in the more enlightened states.
Your best protection is being a darn good member of the team. MVP. (Most Valuable Player), if possible. If your boss likes you--you will be the last to go.
Be there on time. Bring cookies. Follow the rules. Never do an incomplete job. Always double check your work. Never embarrass your boss with his boss. Always be nice to customers--and super nice to other employees.
You can do this Shadow, because--you HAVE to.
