These frequencies are also authorized to certain US Government and Military users to establish interoperability with Amateur Radio operators in disasters. This is exercised several times each year in the USNORTHCOM led exercise "Vital Connections", Department of Defense exercises utilizing MARS stations, and exercising 60-meter band interoperability has become a regular component of FEMA communications exercises in the Regions. High Power night time broadcasts have been utilized in exercises to provide information and instructions from the Government to Amateur radio operators across North America. Government stations using these frequencies are authorized significantly more power than Amateurs.