ABC, CBS and NBC are headquartered in New York City, which is the largest television market in the U.S., so their respective radio and television stations in that market are considered the overall network flagship stations. As programming schedules increased and modern technology improved transmission to affiliates, the networks set up operations centers in New York City (for the East Coast feed) and Los Angeles (for the West Coast feed). Los Angeles is the second largest television market in the U.S., and traditional home to the motion picture industry and its pool of popular talent, one of the reasons the radio networks set up operations there in the 1930s and 1940s (just as the medium of television was starting to take off).