A preliminary investigation is par for the course in 3D printing, but a second request is less common. It is the DOJ's duty to investigate all mergers of a particular size and it has done so in the past in AM. For instance, in the case of Stratasys's merger with Objet in 2012, the DOJ terminated its investigation early after it was argued that the two companies' products "were more likely to be complements than substitutes, and therefore the merger should not raise competitive concerns."