Newly released audio recordings of former United States President John F Kennedy reveal he unwittingly told officials that 25 November, 1963, was going to be a 'tough day'.
President Kennedy, who was assassinated on 22 November, had been due to meet an Indonesian general that day.
In fact, he was buried that day.
The recordings also indicate the president's concerns with younger voters, and US prosperity.
President Kennedy recorded many White House meetings secretly, keeping the existence of the recordings away from top aides.