The Mikoyan Project 1.44/1.42[N 1] (Russian: ?????? ???-1.44; NATO reporting name: Flatpack) was a multirole fighter technology demonstrator developed by the Mikoyan design bureau. It was designed for the Soviet Union’s MFI (Mnogofunksionalni Frontovoy Istrebitel, “Multifunctional Frontline Fighter”) project for the I-90 (“1990s fighter”) program, the answer to the U.S.’s Advanced Tactical Fighter (ATF). The MFI was to incorporate many fifth-generation jet fighter features such as supermaneuverability, supercruise, and advanced avionics, as well as some degree of radar signature reduction.