https://www.cnbc.com/2019/04/11/top-us-military-officer-responsible-for-space-warns-junk-is-urgent-danger.html > WASHINGTON — As the Pentagon works to create President Donald Trump's proposed Space Force, America's top military officer responsible for defending the U.S. from extraterrestrial threats warned lawmakers Thursday of an urgent danger: space junk. > "I've advocated for a long time for the development of some kind of international norms and behaviors in space," U.S. Air Force Gen. John Hyten told members of the Senate Armed Services committee during a hearing on establishing a Space Force.