Unidad de Gestión Operativa Ferroviaria de Emergencia Unidad de Gestión Operativa Ferroviaria de Emergencia Unidad de Gestión Operativa Ferroviaria de Emergencia (UGOFE) was a temporary consortium of Argentine companies formed on 7 January 2005 by Ferrovías, Metrovías and Trenes de Buenos Aires to take over the running of commuter railway services in Buenos Aires after concessions granted to Metropolitano in 1994 for the operation of these services were revoked. Metropolitano, a company formed in 1994 to take over rail concessions granted by the Argentine government, as part of railway privatisation during the presidency of Carlos Menem, operated commuter rail services over Línea San Martín, Línea Roca and
What Is and What Should Never Be and What Should Never Be" was performed live at Led Zeppelin concerts between 1969 and 1973. A live version taken from a performance at the Royal Albert Hall in 1970 can be seen on the "Led Zeppelin DVD". Another was included on disc two of the live triple album "How The West Was Won". Two more versions were included in BBC Sessions. What Is and What Should Never Be "What Is and What Should Never Be" is a song by English rock band Led Zeppelin. It was written by Jimmy Page and Robert Plant and was included as the second