Normally, those surprise onside kicks work because the front line of the receiving team immediately turn and start sprinting back to set up the blocking wall. In this case, it looked like NU's front line stood perfectly still awaiting something like that. Of course, we almost never return a kick, so maybe this is part of their strategy. We don't have to worry about sprinting back to block, because we have no intention of setting up a return. Maybe we do that all the time, in which case it was terrible scouting by Nebraska.