Stoneman School Massacre Teen-Age Victims Were NEVER BORN?

https://archive.org/details/CoralSprings2

What happens if we search for birth records of the supposed victims? If we do not find any, might we suppose that these "victims" were using disposable, assumed identities? There are certain legal problems with using minors as crisis actors, which could be neatly circumvented by such a method. Minors cannot sign legally binding non-disclosure agreements with the authorities running the drills.