According to the author, the exercise could not be kept secret if two helicopters were buzzing around near Aalto University for about half an hour around 3 PM. She noted that there were hundreds of Finnish and foreign students in the area, as well as acoustics-related laboratories and measurement devices, and added that there was free information flow in Finland. #AaltoYliopisto #Opiskelijat #Tiedonvälitys #FI (translated)