Indian Air Force (IAF) helicopters are on standby for air surveillance and fighter jets at Ambala are just a moment away from scrambling in case of emergency. Foolproof security is not confined to the multi-tier system that includes Special Protection Group (SPG), National Security Guard (NSG), and Central and state police forces. For, also roped in is the National Technical Research Organization (NTRO) — a highly specialized technical intelligence gathering agency under the National Security Adviser.
A high level source told TOI that NTRO is tasked with air surveillance and it`s expected to use Israeli-made unmanned air vehicles (UAVs).


