The gas turbine stationary blade comprises a stationary blade section provided therein with a passage for cooling air, an inner shroud for supporting the stationary blade section on the side of a discharge port of the cooling air, and a plurality of segments each of which includes at least one stationary blade section and at least one inner shroud. The core of the invention is a software program that will dynamically provide the EA flight crew situational awareness regarding a threat emitter’s coverage relative to the position of the EA aircraft and to the position of protected entities. A further aspect of the present application provides that wireless point-to-point connections are formed when the first and second mobile devices are in close physical proximity to each other.