Frightening sights are not uncommon on the football field. Freak injuries can come with something as simple as a cleat which gets caught in the ground or, a player who takes a hit and needs a few moments to gather himself before trotting to the sideline. No ailment, however, causes young men and coaches to hold their collective breath as when a teammate drops to the turf without warning, without receiving a menacing blow or, taking a misstep.