NCIS LA  S01E11  entitled “Breach” was aired last Jan 5, 2010.

Here’s a quick synopsis I found:

“When a Petty Officer is murdered, a connection to Sam’s life is discovered. Hetty takes a closer look at the team and how they are handling the pressures of the job.”

Check out the NCIS LA  S01E11  Promo at (Youtube)

If you happen to miss the episode, I found this NCIS LA 1×11 torren link on the net (http://re.zoink.it/4b43fc23).  Enjoy!