In the last year two Islamic terrorists were arrested in San Antonio..A professor in terrorism/security studies there said that for every two we hear about, or get arrested there are probably 24 that remain hidden...so, I guess there are 48 others in San Antonio.
For every two that make the news, there are six quietly locked up. But, yes, there are a dozen more behind each one.
Like cockroaches. You may only see one, but you know that there are more hiding in the woodwork.