If an incident occurs in Germany, however minor involving an aircraft, the pilots are automatically subjected to a breathalyser test. I have been witness to the police breathalysing a crew. The captain involved had consumed a whisky minature in his hotel room and was taken aback when the German police arrived later in the day at the hotel and demanded that he provided a breath test. The test of course proved positive, but fortunately he had a witness to confirm that he had had the drink in his room and no further action was taken and thankfully the press didn't get to hear about it or it would have been another case of "A drunken pilot"