The Historical Enquiries Team or HET was a unit of the Police Service of Northern Ireland created in 2005 to investigate the thousands of unsolved terrorist attacks and murders during the Troubles. It was launched in 2005 and shut down in 2014 following budget cuts in the PSNI. It was split into two groups, Review and Investigation, had 100 members of investigators and support staff and had a budget of £30 million. It was headed by Cmdr. David Cox.[1]