I'm taking the train soon...?

I'm taking the train to Virgina soon, and I was wondering do they have security check? I'm nervous, because the longest I've ever ridden in a train was for only 2 hours, and now I will be traveling for many hours more, but it's at night. I think it's AmTrax station. Also, for a 4 hour bus ride would they have a security check? Thanks so much! God bless!