Belgian Malinois dog trainer in Tennessee/Alabama area?

My husband and I are stationed in Germany and we're moving back to the States soon. We bought a dog from a breeder here in January (the pup was 5 months) and we have had him ever since. My husband works with K9 dogs so we've been working with him training but some of it doesn't seem to be working. He is very aggressive towards male dogs if they present more dominance and he is VERY protective of my husband and I. If my husband and I are not around he's playful towards everyone but if we're there and someone comes up to us he acts like he has to defend us from everyone. It gets bad. I love my dog but we have a child on the way and if we can't figure something out we are going to have to get rid of him and I don't want to do that. So does anybody know a GOOD dog trainer in the Tennessee/Alabama area that could help us? I'd greatly appreciate it!