2 Journalists killed in Cairo
Two journalists died in Wednesday's Cairo clashes, a number of news organizations have reported.
Mr Douglas had worked for Sky for 15 years, based in Washington and then Jerusalem.
The Head of the news organization John Ryley described him as "the very best of cameramen, a brilliant journalist and an inspiring mentor to many at Sky".
Sky's foreign affairs editor Tim Marshall called Mick "a friend, brave as a lion but what a heart… what a human being", adding he was "humorous and wise".
Prime Minister David Cameron tweeted: "I am saddened to hear of the death of cameraman Mick Deane, covering Egyptian violence.
"My thoughts are with his family and the Sky News team."
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