Rahmanullah Lakanwal had been showing warning signs for years. According to an AP News report, Lakanwal, who is accused of shooting two National Guard members in Washington, D.C., over the holiday, couldn’t keep a job, spent long stretches shut off from his own family, and took sudden cross-country trips without explanation. His behavior alarmed people around him. One community advocate even contacted a refugee organization out of concern that his instability was escalating. Those concerns now look stark. When the same advocate saw Lakanwal identified as the suspect in the attack near the White House, they were stunned — but