User blog comment:Brandon Storm9/Mystery of the Light/@comment-3465526-20110426010348/@comment-432124-20110826003639

Well, actually, Zeta Beams have to have a machine on both ends of the journey to work and there was no machine in the Bialyan desert in that scene. So that couldn't have been Zeta Beams, meaning that that could have been a Boom Tube. As for why the heroes detected Zeta Beam radiation, it was probably 'cause the bad guys were using both Zeta Beams and Boom Tubes.