Which statement is not true?

To see how this is done you may follow the links bellow to find out how some others did:

AprilWine

The Count

SoHoS

FyreManDoug I guessed this one correctly.

Blackiswhite

This was a lot harder that I expected.

Here goes;

1. I spent eight years in the U.S. Airforce as an aircraft mechanic.

2. I have been to six different countries.

3. Florida is not the state where I was born.

4. I collect books about Military Combat.

5. I have four aquariums.

6. I married a brunette.

7. I play the Violin.