“It’s hard enough to keep an eye on all these social media sites for terrorism and extremist purposes,” he said. “You are going to keep an eye on what everybody in the military is doing? There is no way you are going to be able to do that.”

It’s also easy, he added, for people to remain anonymous online.

“If you go home and do it and you are careful, and maybe you use [information technology] that hides your IP address and you don’t use your real name — it’s going to be hard to identify people,” Jones said.
— Read on www.military.com/daily-news/2019/09/14/congress-wants-military-report-extremism-ranks-heres-why-will-be-tough.html