Washington, DC—Dr. Humphreys testified before the House Homeland Security Subcommittee on Oversight, Investigations and Management on the threat of spoofing the civil GPS signals that guide unmanned aerial vehicles in flight.
![](https://utw11056.utweb.utexas.edu/wordpress/wp-content/uploads/2021/10/testify.jpg)
A copy of the written testimony can be read here.