The visibility of an arrow after it has been fired is increased by illuminating arrow fletchings in which light injected into the nock is further injected into the fletching. The method includes steps of: A) injecting a target gas with no performance interference to the sealed optical device for leak detection followed by sealing the sealed optical device. The method also includes curing the insulative material. The aggregator queries a set of interaction rules to determine how the change of state is disseminated among the plurality of devices.