BRD  is the Airport Code of Brainerd, MN in the USA

Other Definition:

BRD was a shortcut for "Bundesrepublik Deutschland" (Federal Republic of Germany). It was officially used until about the 1970s and appeared in the media until the 1990s. After the reunion in 1989 it is replaced by the term "Deutschland".

Photo from unsplash regarding 'BRD'