You're right about needing to be proactive instead of reactive....with numbers like these quoted below.
From the article:
"According to the report, there appear to be more than two dozen 'Jamaats,' or private communities, loosely connected and scattered throughout the U.S. with an estimated 5,000 members."
Well, you know how estimates are......
Is that it ? They're gonna need a lot more than that... Depending on which states they're in.