their equipment interfering with existing military bandwidth. jennifer griffin has the full report live from the pentagon. >> reporter: yesterday general william shelton gave testimony on capitol hill in which he addressed the concerns the military has about this technology a company called light square would use and how it would interfere with the system used by the military. they want to upgrade the system and military commanders say sit would essentially make them blind. general shelton told congressional leaders in an earlier classified briefing that he had been pressured to alter his testimony and downplay the military's concerns. he reportedly pushed back. >> i don't know that it's totally accurate to say there were no concerns. i think this was a very