Agents have been shot at in Fabens and elsewhere. Any kind of violence concerns us. And not only that aimed at our agents. The undocumented aliens that are coming in are in peril also. That concerns us because if anything happens on the border, we are left to take care of it.
Violence is violence.
Lights would take away their ability to go undetected. A lot of this stuff happens in remote locations. The main thing is to educate those undocumented aliens on the hazards of crossing the river. There are threats from smugglers and bandits, but the harsh conditions of the river are a hazard too. We rescue undocumented aliens from the river all the time.