This, is still the CALM before the storms!!!
On the day before the rampage, the perpetrator (shooter???) went to school, attended her/his classes as s/he had always done, and kept to her/himself as s/he had done, for ever since s/he’d started going to school.
The day before the rampage, nobody noticed anything wrong with the shooter, because the shooter wears her/his mask well, and because of how well s/he covered her/himself up, nobody knew, until the next day they all came to school, and GOT shot!
The day before the rampage, you may feel that chill, because how calm things appeared to be, on the surface, while feeling, that something’s building up, you just don’t know WHAT it could be, because it still hasn’t happened Y-E-T.
The day before the rampage, everybody still went about their business, like they all did, the parents dropped their kids off at school, then, headed off to work, like ANY given workday, and, NONE of them still has a SINGLE clue, of what, was about to happen, the very next day…………
The day before the rampage, that boy who shot a TON of people, was still his antisocial self, and because he’d been antisocial ALL along, ever since he’d started school here, everybody took the day before the rampage as any regular school day.