Yn ffodus, ychydig ohonom a gafodd unrhyw brofiad blaenorol o argyfwng o'r fath, oni bai eu bod yn ddigon ifanc i fod wedi byw trwy fygythiad y Natsïaid yn yr ail ryfel byd.
Happily, few of us had any previous experience of such an emergency, unless they were young enough to live through the threat posed by the Nazis in the second world war.
C1