Fireworks
Loud unexpected noises
Night time thunderstorms
Blood
Feeling overwhelmed
Feeling a loss of control
The news
Certain smells
Seeing a man harass a woman....that has been an anger trigger for as long as I can remember.
Don't hate me for this one...not being racist...but men of Arab decent.

I can deal with most of these now....but from time to time some of them do catch me off guard.