Image Credit

Description:

Football helmet to helmet hit

Source:

US Navy

License:

Public domain

Source URL:

http://commons.wikimedia.org/wiki/File:US_Navy_071201-N-6463B-543_Navy_Quarter_Back_Troy_Gross_%2814%29_gets_sacked_by_a_blitzing_Army_defender_at_the_108th_annual_Army_vs._Navy_football_game_at_M%5ET_Bank_Stadium_in_Baltimore,_MD.jpg