Chang Díaz described his second flight as much more "subdued". Demonstrators protested at launch time against the flight because it had a nuclear device on board to power the "Galileo" spacecraft. He also said they almost aborted the flight in orbit three times because of malfunctions, but continued because the alternative was to land with the nuclear device at an airport in Senegal, which could have caused an "international incident," according to the astronaut. He identified the deployment of "Galileo" as another tricky part of the mission as he only had a tight six-second opportunity to succeed.