Third on list of longest non-stop, non-commercial powered aircraft's flights is January 10–11, 1962 flight on Boeing B-52H Stratofortress made by major Clyde P. Evely and crew. Can anyone provide any details about this flight?
Wikipedia says, that it was a flight from Japan (Okinawa) to Spain, via Tokyo, Seattle, Fort Worth, Washington and Azores. I'm especially interested in knowing, why that way? Most (all) of today commercial flights are flying Europe to Japan / Far East the opposite way, that is through Asia.
Is there any source of information, why did that flight took the longer route? Was that specially made to break the world record or was there any other circumstances to take such decision?