Everything is fine, he thought. I'm doing all right. I'm doing nicely. I know my way home. I'll be there in half an hour. When I land I shall taxi in and switch off my engine and I shall say, help me to get out, will you. I shall make my voice sound ordinary and natural and none of them will take any notice. Then I shall say, someone help me to get out. I can't do it alone because I've lost one of my legs.