The integrated calorimetry environment of CDF Run 2 comprises the
Run 1 sampling scintillator calorimeters, electromagnetic preshower and
shower maximum detectors, new scintillating-fiber endplug detectors,
radioactive source calibration systems, dedicated trigger paths, and new
custom front-end electronics. Together they form a general-purpose
calorimetry system which was successfully commissioned in 2000-2001. The
initial performance is described here, along with a glimpse of first CDF Run
2 data.