How long are you going for?
I'm sure everyone will be alright! Your parents know what they're doing. They will be so happy when they see you again though, I know all the buns and the dogs and the bird and the cats will run up to you and be so happy. You'll be okay without them because its only for a short time that you'll be away.
You know more about what its like to go away for long periods of time than I do, but I would just tell myself that its not that long and everything is going to be fine. And that if something happened to one of them, I wouldn't want to know until I came home.
I'll be honest, I'm crying thinking about you leaving and then coming back to see them. I don't know wtf I would do in a situation like that. Probably why I didn't join the army, I didn't want to have to leave the people and things that I loved. But thats why you're stronger than I am.
Its going to be okay. Thats what I tell myself all the time, all day every day. Its going to be okay. :hearts