He was sentenced to military detention last year at the Military Corrective Training Centre in Colchester, Essex.

BBC: Sgt Danny Nightingale recommended for discharge from army

After his guilty plea, he was sentenced to serve 18 months at the Military Corrective Training Centre in Colchester, Essex.

BBC: Sgt Danny Nightingale to appeal against gun conviction

He had been serving his sentence at the Military Corrective Training Centre in Colchester, Essex, prior to his release last year.

BBC: Sally and Danny Nightingale

The sniper had been serving his sentence at the Military Corrective Training Centre in Colchester, Essex, prior to his release last year.

BBC: Sgt Danny Nightingale

Armed with the root-cause research, the airline was able to take relatively inexpensive corrective actions, such as synchronizing information systems, clarifying communications procedures, and training pilots in communications skills.

FORBES: The Root Cause Of Your Customer's Anger