Mr Hemingway, who is originally from Dublin, joined the RAF as a teenager before World War Two.
He wants information about three flights that left the US over the weekend. Officials say they followed the law.
Reigning champion Mark Allen exits the Players Championship in the first round with a 6-3 defeat by Kyren Wilson at the Telford International Centre.
The US president says Iran's leadership would be blamed for "every shot fired by the Houthis".
The Tory leader says the target is impossible "without a serious drop in our living standards".
Beijing hopes better wages and discounts can encourage spending and stave off greater economic trouble.
Hillsborough, Grenfell and Aberfan victims back a charter that will compel police to tell the truth.
