In this employment discrimination case, plaintiff alleges that he was fired because of his age and in retaliation for his efforts to assert his rights against this alleged discrimination. Summary judgment for the defendants is reversed, where: 1) plaintiff has put forth a sufficient prima facie case of age discrimination to survive summary judgment; 2) a rational jury could reasonably infer that, based on the evidence, defendants fired plaintiff due to his age and not some other nondiscriminatory pretext; 3) plaintiff has shown inconsistencies in defendants' case sufficient to support an inference of pretext; and 4) a rational jury could find for plaintiff on his retaliation claim.