The quarterback will read the coverage shell to determine which side of the field he looks to ( This can often be determined pre-snap . ) .
Then quarterback will go through a 2 or 3 step progression read to that side .
The quarterback will read the coverage shell to determine which side of the field he looks to ( This can often be determined pre-snap . ) and then he will go through a 2 or 3 step progression read to that side .