I recently wrote a book review on The Making of the Atomic Bomb by Richard Rhodes and he goes into some detail on Niels Bohr in general as well as his escape from Denmark. An interesting detail was when he was secreted out of Sweden, where he had originally fled, to Britain. He was smuggled out in the bomb bay of a British Mosquito aircraft. The bomb bay had been modified to hold a single person and was equipped with oxygen mask, headset to communicate with the pilot and flares. The flares were in the event the aircraft came under attack. In that event the pilot would open the bomb bay and Bohr would parachute into the North Sea and these flares were supposed to aid in finding him in the water (good thing that didn't happen). However, the headset did not fit Niels well and he missed the pilot's order to don his oxygen mask. The pilot, flying above the 20,000 ceiling for flak became concerned when his cargo was not answering the radio and as soon as he was over the ocean descended to a lower altitude. This was fortunate since Niels was unconscious in the the bomb bay due to lack of oxygen.
I have read about that flight before, WOW. Here’s another link:!
http://www-history.mcs.st-and.ac.uk/PictDisplay/Bohr_Niels.html
On the last image Niels Bohr is smoking a pipe. Yes, I remember him coming to the door for receiving the fish packet and pay for it, he would always have his straight pipe in his mouth and speaking at the same time. He was a very mild and mannered person even speaking to a young lad like me!!
His brother Harald was an avid Soccer player (fodbold), and Niels also played Goalkeeper on the same team, but that was before my time!!!