I don't want my dad to go to el salvador to visit my 86 year old grandparents
Why don't you want your father to go to El Salvador?
It worries me that he won't be safe travelling.
It's good for you to be concerned, but I would try not to worry too much. I'm sure he will be just fine.
I'm still worried and it's not cool. I don't want him to die. I wish they lived closer.
It's understandable to be worried when family members travel, but try to remember that the vast majority of trips happen with no harm done to anyone.