ALT A photograph of a simulated machete attack. In the middle of the shot is a man in a balaclava wielding a large knife. Behind him are actors with fake blood injuries participating in a simulated emergency exercise at University of Limerick

ALT A photograph of a woman behind held back by police. She is wearing a black jacket and has fake injuries on her face. The police are wearing high visibility clothing. The woman and people in the background have fake blood injuries to their arms, hands and faces as part of an emergency simulation exercise

ALT A photograph of a green military bomb disposal robot. It has six wheels and a long grabber arm. There are two men in military fatigues operating it, one holding a gun. Behind them is a large jeep and a collection of people in high visibility clothing

ALT A photograph of a white and orange Irish coastguard helicopter which has landed on a large grassy field, but still has its rotorblades whirring. In the foreground, a group of people in high visibility clothing are carrying a stretcher towards the helicopter