They don’t sounds so bright. Nothing like being obvious while you are plotting to kill Americans. From cnn.com:

Neighbors said the men, who wore turbans, caused no problems but seemed odd. “All you could do was just see their eyes. They had their whole head wrapped up. Just the eyes showing. And they were standing guard — one here, one there — like soldiers. Very quiet,” one woman said.

Unfortunately, there have got to be smarter terrorists out there.