TSHTF has started.

[CharlesHarris]

There is a very real danger of ISIS sleeper agents infiltrating throughout the EU with this huge influx of immigrants which are not being vetted or screened, many of them without travel documents or intentionally discarding them. We have already seen this in the US among the "OTMs" aka "Other Than Mexicans"infiltrating through Texas or Arizona and later being apprehended in foiled terror attempts.

The only question is whether you get dozens, hundreds, or thousands of them, how well they are trained and organized, and how long it takes your security services and police to identify, effectively track, and eventually round up before they get into serious mischief.