The recent cluster of three high school football deaths brought to the forefront just how unsafe the game is. While the rate of fatal injuries is very low, football remains a dangerous activity. The statistics for the NFL are familiar and striking. In 2013, among 1,696 players there were 225 diagnosed concussions. From 2004-2009, there were over 16,000 recorded injuries, 21 percent of which were considered major. Most striking is the recent prediction by the NFL itself that that it expects one-third of retired players to develop long term neurologic problems related to head injury induced chronic traumatic encephalopathy. A study by the National Institute for Occupational Safety and Health found that among NFL players who played at least five full seasons, deaths associated with neurodegenerative diseases were three times higher than expected and deaths from Alzheimer's and ALS (Lou Gehrig's disease) were four times higher.