The F-16C 'Falcon' variants entered production in 1984. The Block 25 was the first version with improved cockpit avionics and radar which added all-weather capability with beyond-visual-range AIM-7 and AIM-120 air-air missiles. Block 30/32, 40/42, and 50/52 were later C/D versions. The F-16C had a unit cost of $18.8 million (1998). [Wiki]