simulation

 Emergency forces and shoppers take place in a simulated terror attack at the Trafford Centre on 10 May, 2016 in Manchester, England

Sean Hansford/MEN – Pool / Getty Images

Emergency forces and shoppers take place in a simulated terror attack at the Trafford Centre in Manchester, England today

REUTERS PICTURE HIGHLIGHT...ATTENTION EDITORS - REUTERS PICTURE HIGHLIGHT TRANSMITTED BY 1355 GMT ON JULY 11, 2013    JER04  An Israeli soldier takes part in an urban warfare drill simulating a battle with Hezbollah in a mock village at Elyakim military base near the northern city of Haifa. REUTERS/Nir Elias

Nir Elias/Reuters

An Israeli soldier takes part in an urban warfare drill simulating a battle with Hezbollah in a mock village at Elyakim military base near the northern city of Haifa, Israel.