From Language Log:
Stephen Benjamin ... He volunteered for the Navy, went to the Defense Language Institute to learn Arabic, and was ready and willing to go to Iraq. He never got there. Why? Because military snooping on IM exchanges between Benjamin and his roommate revealed that they are gay, as a result of which he was discharged from the Navy.
Now you know it: keeping gays out of the military is more important than talking to Iraqis.