All the balloons shown in the article's image and embedded video are tethered aerostats rather than drone blimps. If this in fact the same as what's going to be

All the balloons shown in the article's image and embedded video are tethered aerostats rather than drone blimps. If this in fact the same as what's going to be used, these are already in place along the U.S./Mexico border, and have been for almost 20 years. https://en.wikipedia.org/wiki/Tethered_Aerostat_Radar_System https://en.wikipedia.org/wiki/Tethered_Aerostat_Radar_System