Did anyone else catch how ana lucia was holding the gun. I got the sense that she was in law enforcement or the military by the way she was holding it on sawyer? looked kinda like SWAT.

I did notice that. Did she mention to Jack in the airport what she does for a living?
But yeah, I did catch the way she was holding that gun, especially right after she clocked Sawyer and then told Jin and Mike to stay back. No ordinary person would hold a
gun like that. IMO anyway. I know I wouldn't. Unless I wanted to look really cool!
haha

Nice catch on how Ana handled that weapon...she did indeed look like some with experience. It kind of reminded me of the "twins" who were part of the crew who kidnapped Walt. They too moved very precisely.....

I agree, she gives me the impression that she's got experience in law enforcement, security or government. In addition to her rather adept self-defense moves and handling of the gun, when she was questioning Jack at the airport (in "Exodus") it seemed to me more like an interrogation than an idle conversation.