If you've ever encountered a loose horse you'd know it often takes time.
I have and even more reason to have a night watchman guarding your prize possession. If you think for one minute Bret Hanover or Albatross didn't have night watchman, you're highly mistaken. Anything can happen at any time -- cast in a stall, etc. -- a knowledgeable human needs to be present to reduce the risk of serious injury.