US Air Force plane turns back from Antarctica after Russian missile threat

A U.S. Air Force plane heading to Antarctica was forced to turn around Tuesday due to a “potentially hazardous” space activity warning.  The American C-17 Globemaster aircraft, using callsign ICE28, initially took off around 9:00 a.m. local time ut returned to Christchurch, New Zealand, less than 3 hours later due to a Notice to Airmen…