Do I need a defense attorney now?

Yes. Immediately. The navy may not detail one to you yet (they may give you 31b advice, ie keep your mouth shut and request to speak to an attorney...

I don't know what to expect

You need to speak to a criminal defense attorney ASAP. CID will try to wrap you in to this (if they believe it's assault on the child - and they...

Reproductive Endocrinology destroyed an irreplaceable sperm vial and is now asking for a dollar amount to settle this situation.

There really isn't enough information in your post to know. You should contact a plaintiff's attorney/firm ASAP so you don't lose the opportunity...

Can I void a mortgage

This is really a real estate question, every categorized. There's several different ways to Withdraw from the contract, but it will vary from state...

Can my brother join the Marines even though he has a federal warrant for his arrest?

He can't go with a warrant for his arrest. Have him call his recruiter so his recruiter doesn't get screwed over.

Came here with visa, but it expired(about a year and a half ago. Can my parents get in trouble (still illegal) if I get married?

This isnt a military law question, it's an immigration question. I will try to repost your question in the appropriate category.

They should be able to get on base unless they are debarred. Just because somebody is accused of a crime – doesn't mean they did anything...

My five year old son hit a neighbor girl on the head with a rock now she has to get stitches

Not sure what your questions is - if you post a question, most will try to answer if they can.

Go to legal assistance on base. They deal with it all the time and are free.

It depends, of course, but I suspect nothing will happen if you register.