The other day we were waiting to cross 4 at LGA and this USAir ERJ lands.... and he about blew our ears off with the amount of reverse! despite using maybe half of the runway. Now, I've noticed this while riding in the back of CRJs/ERJs, but it seems like you guys practically go to 2.00 EPR on reverse, even if your touchdown speed is in the low 120s... and then the reverse is only on for like, 4 seconds! Is that really necessary, or do you guys just like to hear your engines roar. Not criticism, just curious.