Zubair and Khaleed Ahmed came to the conference and met with a man who promised to train them to kill American soldiers in Iraq and Afghanistan, according to an indictment unsealed Wednesday.

Zubair Ahmed, 27, and Khaleed Ahmed, 26, were charged with conspiring to commit terrorist acts against Americans overseas. They were arrested Wednesday in Chicago and are scheduled to appear in U.S. District Court there Monday.

Hard to know how much to make of this, but stay tuned.