Thousands of people are using Flightradar 24 to track a US Army Blackhawk helicopter near the Ukrainian border.
The Blackhawk took off from Mielec in Poland at UTC 01.00 and planned a flight to Rzeszow but instead flew much further south to the Ukrainian border.
WATCH Video shows giant AN-225 burning
It then turned north along the Ukrainian border.
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SEE: Gorgeous drone photos of the AN225.
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