虚惊一场的英文怎么说？

部队解除了戒备状态, 原来是虚惊一场.
The troops (were) stood down: it was a false alarm.
马丁说老板将来个突然造访，但结果却是虚惊一场。
Martin said the boss was going to make a surprise visit,but it proved to be a false alarm.
天空变得黑沉沉的，我们以为要下雨了，但结果只是虚惊一场。
The sky went very dark and we thought it was going to rain but it was a false alarm.
汽油短缺的谣传原来是一场虚惊。
The rumour of a petrol shortage turns out to be a false alarm.
有人喊”着火啦”，其实是一场虚惊，并无危险。
Someone shouted"Fire",but it was a false alarm and there was no danger.
有人喊'着火啦',其实是一场虚惊,并无任何着火的迹象。
Someone shouted 'Fire', but in fact it was a false alarm and there were no signs of fire.
幸好两部车子没有迎头相撞，因此比尔只是受了一场虚惊。
Fortunately the two cars didn't crash head on,so Bill got off with nothing worse than a bad fright.
”有人喊’着火啦’，其实是一场虚惊，并无任何着火的迹象。”
"Someone shouted'Fire',but in fact it was a false alarm and there were no signs of fire."

What a False alarm 是