I will disagree with you. You discover the event in a sterile way without knowing how quickly either were moving. Your just assuming that it wouldn’t be possible but woth the teacher reaching out to grab the gun, if you replace it woth a knife and the child also trying to stab at the adult you now have the child’s momentum and the adult momentum meeting at the blade tip and adults hand. Could have just as easily gone through the center of the hand and the momentum of the adult could have continued forward bringing thier chest at the blade.
They aren’t. They have to enter at ports of entry and request asylum.
Learn like aoc
https://youtu.be/AIr4yOSCihw?si=ZprwsZTxYoKElpij