Am I being overbearing?

My 14 auditioned to be a background character in a short film that's being done in our town. I think it will be played at a film festival but my son and two of his friends will be background characters. He's upset that I'm not just dropping him off at set and leaving. I was given permission to be on set to watch him for his safety. He said it's embarrassing and no one else's parents are doing that. My husband said I'm being overbearing and to let him go to set alone. I know this isn't Hollywood but if there's anything we've learned is film sets CAN have people who want to harm children. I'm not planning on being in the way or bothering him. Just want to keep an eye on him.

@Casey it's not about not trusting my child. It's about not trusting some of the people that are hired to work on films. I'm sure so many child stars who had been SA'd could have been prevented if there parents cared enough to be there instead of allowing them to be alone with creepy adults. I personally don't think it's appropriate to be alone with a child like that if their parents aren't around. With things we have found out with the quiet on set documentary it's that there can be creeps on set and it's our job as parents to protect our children. There were obviously adults in charge of those sets yet so many children were still harmed. I do trust my son. I do not trust random adults that I do not know.