On November 2, 1986 of the cirrus Intensive Field Observations, cirrus clouds were observed from both ground-based and aircraft lidar. The NASA ER2 aircraft carrying a lidar, crossed Madison three times and Wausau five times during its mission. Ground-based lidars from the University of Wisconsin in Madison and the University of Utah in Wausau were operating during the ER2 overpasses. This gave FIRE unique lidar observations of cirrus clouds from both sides. This lidar data are presented and analyzed.