tower provided a signal that spanned approximately from the site. By 1954, KRLD-TV expanded its broadcast day to an 18-hour daily schedule (running from 6:00 a.m. to 12:00 a.m.). In May 1955, the station began construction of a new -tall tower in Cedar Hill. At the time of its completion in October 1955, the structure was considered to be the tallest television broadcast tower in the world (once KRLD-TV moved its transmitter to the Cedar Hill tower in early 1956, the original Griffin Street transmitter remained in use as an auxiliary facility until it was disassembled in 1984; the antenna on which it was installed was torn down in 1995, in order to reduce the load on the tower). KRLD-TV served as the home base for CBS' network coverage of the assassination of President John F. Kennedy on November 22, 1963, when suspect Lee Harvey Oswald (from an upper-floor window at the Texas School Book Depository) shot his rifle at sniper range at the Presidential motorcade carrying Kennedy and Texas Governor John Connally as it had turned onto Elm Street. Eddie Barker, who was KRLD-TV's news director at the time and had been with the station since it signed on fourteen years earlier as one of the original members of its news department staff, was the first person to announce Kennedy's death on television, relaying a message from an official at Parkland Hospital that Kennedy had succumbed from the gunshot wound as doctors conducted emergency surgery. Because of a local press pool arrangement that was put in place that morning to cover Kennedy's speech at the Trade Mart downtown, Barker's scoop appeared live simultaneously on CBS, which had sent correspondent Dan Rather to report from Dealey Plaza, and ABC. Two days later, a KRLD-TV field crew captured footage of Oswald's assassination by nightclub owner Jack Ruby as officers were transferring the former in handcuffs out of the Dallas Police Department's downtown precinct. CBS also maintained an arrangement with Channel 4 to use the station's remote unit to transmit live programming broadcast by the network during the 1960s and 1970s; in particular, the remote transmission truck was used to relay color broadcasts of CBS' NFL and college football game telecasts held in Texas. In 1964, KRLD-TV moved its operations from the Times Heralds Patterson Street offices into the station's current, purpose-built studio facility at 400 North Griffin Street (across the street