Was inauguration firework in Washington hacked by Russians?

During a fireworks show marking the end of a pre-inauguration welcome party for incoming US president Donald Trump on Thursday, three letters that looked suspiciously like "USR" burst into the sky.

CNN host Brian Stelter captured the spectacle above the Lincoln Memorial in Washington, D.C.

The letters were intended to spell out "USA." So people are joking that the light show was hacked by the Russians, the Huffington Post writes.