This is an undated family handout photo issued by Britain's Foreign & Commonwealth Office and made available on Tuesday Feb. 13, 2018 of Stuart Hill, left, and his brother Jason Hill, who both died in a Grand Canyon helicopter crash. An expert says investigators are likely to pay special attention to the type of helicopter that crashed in the Grand Canyon, killing three British tourists. Aviation attorney Gary C. Robb says the EC-130 helicopter generally lacks a system to keep it from exploding on impact, denying passengers a few extra minutes to try to escape. It comes after the crash on tribal land, which has fewer regulations than helicopter tours in Grand Canyon National Park. (Family Handout Foreign & Commonwealth Office via AP)
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