A well casing perforator for efficiently recovering available water in a previously drilled well by perforating the well casing. Capabilities and requests of the clients are used in determining the video streams to generate as well as what video streams to deliver to the clients. The data packet is assigned to one of the queues based upon the attribute determined, which may be an indicator of a priority characterizing said data packet. Usually, the shaft is moved, typically rotated or reciprocated, and the energy conductive element is moved relative to the shaft, typically by pivoting a rigid element or bowing a flexible element. C includes at least one element selected from the group consisting of Al, In, Sn, B, C, Si, and P. Additionally, a relay device that may be used as a relay node to receive and broadcast signals is provided.