Never heard of vice.com so source could be crap
Pentagon Surveilling Americans Without a Warrant, Senator Reveals
The Pentagon is carrying out warrantless surveillance of Americans, according to a new letter written by Senator Ron Wyden and obtained by Motherboard.
Senator Wyden's office asked the Department of Defense (DoD), which includes various military and intelligence agencies such as the National Security Agency (NSA) and the Defense Intelligence Agency (DIA), for detailed information about its data purchasing practices after Motherboard revealed special forces were buying location data. The responses also touched on military or intelligence use of internet browsing and other types of data, and prompted Wyden to demand more answers specifically about warrantless spying on American citizens.
https://www.vice.com/en/article/88ng8x/pentagon-americans-surveillance-without-warrant-internet-browsing