New Delhi, Feb. 2 -- Radars were deployed for active monitoring of Indian airspace. ORPs by fighters were manned round the clock. Additionally, ORP by transport aircraft and helicopters were also maintained to tackle unusual air activity (slow mover). Air Defence operations witnessed a substantial increase during the months of April and May 25 and the details are as under: * Integrated Air Command and Control System worked flawlessly and was instrumental in integrating air surveillance picture from all sensors in the country and the same was provided to Army and IN through Akashteer and IMSAS respectively. The fused picture was instrumental in building up Air Situation Picture across the country and ensured seamless and effective air defen...