They can stay without smiling, the way how the soldiers train not to laugh! (Video)

I have all the qualifications of a soldier, but must pass the test of laughter.

Ceremonial Guard US Air Force, has been put in the "test" of rubber goose that "sees" the issue sounds, to see how much you can endure without laughing.

Soldiers who will be listed before various delegations should stick serious, because it would be embarrassing to the Guard to laugh occasionally, reports Telegraph.

Sip seen in the video, most soldiers can not be contained, but there are those who are cold and staying very serious.