ICO ordered its first 12 satellites in July 1995, and three more in September 2000. All are versions of the popular Boeing 601 model, with selected subsystems modified for the special requirements of medium-Earth orbit. The first ICO satellite was destroyed in an unsuccessful launch March 12, 2000, on a Sea Launch vehicle from a platform in the Pacific Ocean. The second ICO satellite was launched successfully aboard an Atlas rocket on June 19, 2001. The original 12 satellites were designed primarily for global mobile voice telephony services. Plans were announced in 2000 for BSS to modify the 11 remaining original spacecraft currently in production for the revamped New ICO system. The spacecraft modifications will assist in the enhancement of the New ICO constellation to provide high-quality voice and packet-data services.