Based on the border invasion happening right now I would say the real number is more like 1500 or 15000, the number 71 is most likely recruiters, command and control, those 71 could easily be found serving as Imam’s in the largest of mosques.
Just Saying... don’t discount the obvious!
PC will eventually kill us all; that to should be obvious.
Common sense would require anyone to realize that there are a lot more than 71 terrorists inside our borders, and it would also require anyone to realize that the terrorists would not give out accurate information about their strength.