On December 18th, the last (for the moment) American U-2 mission was flown over Iraq. These missions began in 1990, after the Iraqi invasion of Kuwait, and continued until December, 2011. The last decade has been the busiest for the U-2 in decades. Because of the spy satellite quality sensors carried by U-2s, and a limited number of spy satellites up there, there was always more demand for U-2s sorties than could be provided. Three years ago, for example, two 41 year old U-2s achieved a record 25,000 hours in the air. One of these aircraft had made three belly (landing gear up) landings, requiring extensive rebuilding after each incident.