michael kors black Friday Concussions are movements of the brain inside the skull from an impact. The former players contend that they suffered repeated concussions from hits and tackles during their years in the NFL that caused brain damage. They contend the injuries left them with problems such as dementia, headaches, memory loss, blurred vision, sleeplessness and ringing in the ears."Most everybody was conscious. They were very dazed."The fiery twin blasts took place almost simultaneously and about 100 yards apart, knocking spectators and at least one runner off their feet, shattering windows and sending dense plumes of smoke rising over the street and through the fluttering national flags lining the course.When the second bomb went off, the spectators' cheers turned to screams. As sirens blared, emergency workers and National Guardsmen who had been assigned to the race for crowd control began climbing over and tearing down te