Potentially, DC Police may own these devices due to DC being home to a large deaf population. I believe DC has the highest deaf population, as a percentage of

Potentially, DC Police may own these devices due to DC being home to a large deaf population. I believe DC has the highest deaf population, as a percentage of the whole, among all major US cities. DC Police began installing "Rumbler" systems in police cars ten years ago, partly to help the deaf population identify when police cars were present. [1] I could imagine a situation where someone on the city/police council saw the LRAD devices as potentially useful in the event of a largely-deaf protest, as happened in 2006. [1] http://www.washingtonpost.com/wp-dyn/content/article/2007/10/28/AR2007102801465.html http://www.washingtonpost.com/wp-dyn/content/article/2007/10...