Can we sue a hospital for defamation of character?

I don't see from the facts that this rises to the level of defamation.

What type of lawyer would have experience with land law and implied covenants as it relates to a specific parcel of land?

Go with a local real estate attorney.

Can my boss fire me?

Based on the facts relayed: yes. GA is an "at will" employment state. She does not need just cause to release you, but she must follow...

get a NV attorney to assist you with a guardianship.

Getting ssi for previous knee injury 20 years ago

An SSI award will consider if you can't do work (substantial gainful activity) of any type, due to your knee. So, you have to be prepared to...

If I walk away from the vehicle, am I stuck with the loan?

It's still your's and you are still responsible for it and the associated loan.

Do I have a chance of getting VA benefits from a non-relative, whose will designated me as beneficiary of any benefits due him?

I refer you to 38 USC 5121 (a)(2)(C)(6) which governs payments of accrued VA benefits to non-relatives.

Hypothetically, would Mr. Rose be found in contempt if he had an Apportionment ruling that none of his benefits were to be used?

The Supreme Court in 2012 denied to hear a similar case (Barclay v. Barclay) from TN with similar facts--Rose v. Rose is still fundamentally good...

Can a Durable Power of Attorney over power a Temporary Guardianship?!

You need an elder law attorney as soon as possible. The language of the POA and the language of the guardianship order need to be reviewed closely...

Got fired without reason

Georgia is an "at will" employment state. You can quite reasonably be released from your job under the facts given.