A fired accountant bought a shotgun the day after he lost his job, then returned to the office the following week and opened fire on his bosses, wounding both and killing a receptionist, the Associated Press reported.Troy, Mich. police said Anthony LaCalamita III, 38, targeted two managers and also may have intended to shoot another one."There is a suspicion that there might have been a third upper management official he was seeking," said Troy police Lt. Gerry Scherlinck.