that evening , back at el campo , i laid on a buffet dinner for my guests , but most of them just stood quietly in small groups , hardly touching the food , cementing friendships that had now been formed out of grief , and i knew that pilgrimages were being planned for the future , and then next morning it was time for me to say goodbye to my guests , but not before they said a final farewell to the aircraft , although leutnant angerns son and i had gone for a clandestine early morning spin .