good for crew bonding as well as their psychological well-being. After watching 2010, the sequel to 2001: A Space Odyssey, Shepherd commented, "[There is] something strange about watching a movie about a space expedition when you're actually on a space expedition". An important part of the crew's schedule was regular exercise. They had three pieces of equipment for this: a stationary bicycle, a treadmill (TVIS), and a resistance device (IRED) for weight-lifting. The bicycle malfunctioned in mid-December 2000, and wasn't fixed until March. The treadmill, which used bungee cords to keep the crew member in place, was designed to reduce the vibrations caused by running. A normal treadmill would have produced enough vibrations to shake the station, and potentially affect the sensitive science experiments on board. The treadmill malfunctioned near the end of February, but some in-flight maintenance fixed the problem within a week. Ground communications Until the Unity module was available for use a month into the mission, the astronauts used the Russian VHF communications gear (also called the "Regul radio link") in Zvezda and the Zarya module to communicate with the Russian Mission Control Center (known as "TsUP") in Korolev, outside Moscow. The Russian technology didn't have the use of satellites, so they were restricted to ground passes (called a "comm pass") which lasted for only 10–20 minutes. With the arrival of the solar arrays on STS-97, they activated the S-band Early Communication gear in the Unity Module, allowing for more continuous communication with Mission Control in Houston via NASA's network of Tracking and Data Relay Satellites. During STS-106 in September 2000, the equipment for a ham radio was delivered to the station. The first 'ham' contact with the ground by the Expedition 1 crew was on 13 November 2000 on a pass over Moscow, shortly followed by contact with Goddard Space Flight Center in Greenbelt, Maryland. The crew reported that "Voice quality of ham radio continues to be well above any of our other links." The Amateur Radio on the International Space Station project had the crew of the station to make brief windows to radio contact with schools and clubs on the ground. The first school to be contacted by the ISS was Luther Burbank School in southwest Chicago. The contact had been planned for 19 December 2000, but due to technical problems, it was delayed to 21 December 2000. Due to the speed of the