In an interesting sidenote from the World Trade Center rescue operations, New York City officials requested that Metricom turn their Ricochet wireless service back on so that rescue workers have access to email and other online services. Metricom had turned off their service in August. A Metricom employee is monitoring the network from San Jose, and volunteers, including former employees, are helping to keep the network up and running. If Ricochet never does go operational again, I’d say this is a noble way for them to go out.