- Massachusetts Bay Transit Authority Police Sgt. Richard "Dic" Donohue is retiring three years after being shot
- He says he's been unable to fully recover and cannot physically perform his policing duties
- Donohue has taken a teaching position in criminal justice at local college, he says
(CNN)A police officer critically injured during the pursuit of the Boston Marathon bombers in 2013 announced his retirement Tuesday, according to an official news release.