"It occurred to me that we have to have a way that if a guy is in danger because of his testimony, we have to get him out of there, and in a second, " said Shur, 79, who is now retired.

CNN: Inside the witness protection program

Safin has played mediocre at a lot of events but that has forced him to get out there and practise.

BBC: The BBC team on Djokovic's defeat

And I think now that John's actually going to announce and get out there in the full campaign mode, the burden on him is to, kind of, give the press a comeback narrative by sharpening his message and positioning himself - where he's really all has been his career, which is a guy who wants to change the way things are done in Washington.

NPR: McCain Set to Make White House Run Official

And even as a kid, I knew there were plenty of days when he was in pain, and I knew there were plenty of mornings when it was a struggle for him to simply get out of bed.

WHITEHOUSE: The White House