Warning - beware of people

Now here's a useful warning. In response to the Russian school terrorist attack, the government is advising people to be on the lookout for:

Interest in obtaining site plans for schools, bus routes and attendance lists

Has anyone ever asked for any of these things anywhere? This seems highly unlikely

Prolonged "static surveillance" by people disguised as panhandlers, shoe shiners, newspaper or flower vendors or street sweepers not previously seen in the area

So now we expect teachers to make out terrorists on the street disguised as flower vendors. This makes sense. It's what they're trained to do.

Observations of security drills
People staring at or quickly looking away from employees or vehicles as they enter or leave parking areas

Look he's staring - whoops now he's looking away. So if you look at - or don't look at them, it's suspicious? That about covers it.

Foot surveillance of campuses involving individuals working together

That would be groups. So if you see any people walking around, alone or in groups, looking at you or not, call the feds. That's a great warning.