period of three months during 2015, ten CNC officers were seconded to the British Transport Police's Counter Terrorism Support Unit in London. This detachment helped to cover the shortfall in firearms officer numbers in London in the wake of recent European terror attacks on major cities. On 27 March 2016, The Daily Telegraph, post-Brussels terrorist attacks, stated: 'The Home Secretary has announced there will be a "surge" of more than 1,000 new armed police officers deployed across the country in the wake of the terrorist attacks in Brussels. Ms May has also changed the law to enable the 1,000 armed police officers guarding Britain's nuclear power stations to be redistributed in the event of multiple terror attacks.' A press release from the CNC and Home Office details the changes made to enable a greater mutual aid role (dated 7 March 2016). It cites the CNC's Deputy Chief Constable Simon Chesterman: 'The signing of this collaboration agreement allows chief constables to formally request and receive CNC AFOs to work under his or her jurisdiction for the time period they require. Currently, CNC officers only have policing powers in a five-kilometre radius of a nuclear site, as laid out in the Energy Act 2004, and this agreement removes that restriction should officers be needed to provide support at any force across the country if circumstances require it.' Following the Manchester Arena bombing on 22 May 2017, the force deployed in excess of 450 AFOs across the UK. This deployment occurred following the UK Threat Level being increased from severe to critical. Operation Temperer was activated and the military was deployed to backfill CNC officers at nuclear licensed sites. CNC officers were deployed to support Northumbria Police, Greater Manchester Police, Merseyside Police, South Yorkshire Police, West Yorkshire Police, Staffordshire Police, West Midlands Police, and South Wales Police. The CNC were again deployed on Operation Temperer in 2017 following the 15 September Parsons Green train bombing. Although a shorter deployment it involved a larger number of officers deployed across the UK. See also List of law enforcement agencies in the United Kingdom, Crown Dependencies and British Overseas Territories Law enforcement in the United Kingdom Nuclear power in the United Kingdom Specialist Firearms Officer References External links 2005 establishments in the United Kingdom Department of Energy and Climate Change Nuclear energy in the United Kingdom National police forces of the United Kingdom Government agencies established