It was Gaines Adams.
Gaines Adams was a professional football player who was born on June 8th 1983 and died on January 17th 2010. During his career he played for many teams with the most prominent being the Tampa Bay Buccaneers and Chicago Bears.
Chicago Bears fly flags at half staff to honour the anyone that died during the service to their city or country, most recently this was done to honour the death of 19 fire fighters that died.
In 1964, Chicago Bears players Willie Galimore and John "Bo" Farrington, died in a car crash.
Russ Peterson - American football player - died in 1971-10.
Pat Tillman died in Afghanistan.
Charlie Justice - American football player - died on 2003-10-17.
Jay Berwanger
Against Chicago bears at tiger stadium in 1971 he played wide receiver
Corey Smith - American football player - died in 2009-03.
Louis Brian Piccolo (October 31, 1943 - June 16, 1970) was a professional football player for the Chicago Bears for 4 years. He died from embryonal cell carcinoma, which was found as a large tumor in his chest cavity. He was the subject of the 1971 TV movie Brian's Song. Piccolo was portrayed in the original film by James Caan and by Sean Maher in the 2001 remake.
Joe Perry of Aerosmith has not died. Joe Perry, football player died of dementia in 2011. Joe Perry, snooker player has not died.