It is the first time that Operation Temperer has been used since it was revealed in 2015
Prime Minister Theresa May has raised the terror threat in the UK to its highest level for the first time in a decade and activated Operation Temperer – allowing military personnel on the streets to free up police resources – for the very first time.
The announcement follows a blast outside a concert in Manchester which left 22 people dead.
After 22-year-old Salman Abedi was identified as the suspected suicide bomber, the threat level was eventually raised to critical and the Operation Temperer was established.
What is a critical threat level?
Critical threat levels means that a terrorist attack is expected imminently. Ms May said that the decision to raise the threat level to critical was taken in part because of the potential that the suspected Manchester attacker may have been part of a network of other terrorists who may attempt another attack.
What is Operation Temperer?
Operation Temperer is an established security measure that means citizens can expect to see soldiers helping law enforcement at sensitive security points like rail stations, Parliament, and other destinations or events with big crowds. The operation, first unveiled in 2015, is a practised procedure, and allows UK soldiers to replace armed police in many areas so that those police can patrols in key areas.
The plan will reportedly allow as many as 5,000 troops to be deployed in the UK.
But military assets have been used to protect against the terrorist threat before, including in February 2003 when troops were drafted in to Heathrow, with armoured vehicles patrolling amid fears that extremists could be on the loose with a surface-to-air missile launcher.