The Fermilab NuMI (Neutrinos at the Main Injector) beam system directs an intense flux of neutrinos toward the MINOS far detector, located in Soudan, Minnesota, with a baseline length of 735 km. A first year of NuMI beam operation has been completed with 1.4E20 protons targeted, and primary beam power as high as 270 kW. Details of this first year for NuMI beam operation are presented, with emphasis on providing, controlling and maintaining the intense sustained proton fluxes needed for the MINOS long baseline neutrino measurements.