with missile booms – this was in order to reduce weight and increase the aircraft lift capability. Capt Greenhalgh then returned to Estancia House, where his aircraft was refuelled, fitted out, and armed with four missiles in 20 minutes with the rotors still turning. An 'O' group was then held with the crews of two Scouts of 3 CBAS and Capt Greenhalgh took off on a reconnaissance mission, while the other aircraft were fitted out and readied. Within 20 minutes, he had located the target and carried out a detailed reconnaissance of the area. He fired two missiles at the enemy positions and then returned to a pre-arranged RV to meet up and guide in the other two Scouts. The three aircraft, positioned 100 metres apart, then fired a total of 10 missiles (nine missiles hit, one failed) from the ridge overlooking the Argentine positions 3,000 m away and succeeded in hitting the howitzers, nearby bunkers, an ammunition dump and the command post. The Argentine troops returned mortar fire, a round landing directly in front of Capt Greenhalgh's Scout. Northern Ireland In Northern Ireland, the Scout pioneered the use of the Heli-Tele aerial surveillance system, having a gyro-stabilised Marconi unit shoe-horned into the rear cabin. The Heli-Tele unit weighed some , although later developments reduced this significantly. The aircraft was also used for mounting Eagle patrols. In this role, the rear cabin doors and seats were removed and four troops sat in the rear cabin with their feet resting on the skids. Operating with two aircraft in unison, this allowed an eight-man patrol to be quickly inserted into an area and mount snap vehicle check points (VCPs) if necessary. Up until 1973, the standard tail rotor colour scheme for the Scout was bands of red and white. On 14 September 1973, a soldier died during training at Gosford Castle, Armagh, after coming into contact with the tail rotor blades whilst the aircraft was on the ground. Following this accident, the tail rotor blade colour scheme was changed to the distinctive black and white bands. Because of the specialist nature of operations in Northern Ireland, a particularly important piece of role equipment was introduced in the form of the "Nightsun" 3.5 million candlepower searchlight. Operations at night were greatly enhanced with the introduction of night vision goggles, although these missions could still be hazardous. This was evident on the night of