NAGAAIR88 The British were ready for this development, and as soon as the rates started to improve - for the Germans - they introduced "Window". Once again the system started to score increasing successes against the British raids. The system was in place for the 1998 through 2013 seasons and in 2014 was replaced by the College Football Playoff under its original four-team format. A more sophisticated method for blinding the German radar was "Mandrel", a jamming signal broadcast from aircraft accompanying the bomber stream or later certain bombers themselves.|Saya Pilih Berlakon - Janna Nick