Soon after the entry to service of the longer range CRJ200, the model proved to be a commercial success as well. According to aerospace publication Flight International, 1999 was a record year in terms of aircraft deliveries by Bombardier.[19] Writing around this time, authors Bijan Vasigh, Reza Taleghani, and Darryl Jenkins declared that "the CRJ program [is] one of the most successful regional aircraft programs in the world".[2] By the end of 2000, perhaps the most significant operators of the CRJ100 included the American airline Comair, German short-haul operator Lufthansa Cityline, and French regional airline Brit Air; of its CRJ200 sibling, key operators by this time included Delta Connection, SkyWest Airlines, and Independence Air.[20]