The Pegasus Edit
In 2358, as captain of the USS Pegasus, Pressman was placed in charge of testing an experimental phasing cloaking device, which had been developed by a secret group at Starfleet Security in direct violation of the Treaty of Algeron, which banned the use of cloaking technology aboard Federation starships. In response to this illegal activity, the crew of the Pegasus mutinied against Pressman and attempted to gain control of the ship. Pressman and a small group of officers, including a young Ensign William T. Riker, were able to escape the ship by fighting their way to the escape pods. From there, they observed what appeared to be the destruction of the ship.
When Pressman and the surviving crew returned, they faced a board of inquiry with the Judge Advocate General about the mutiny and the loss of the ship. He ordered the rest of the crew not to divulge the nature of the experiment. The report from the inquiry was classified and Pressman did not face charges.
Pressman eventually obtained a position within Starfleet Intelligence. By 2370, he became a rear admiral.
Attempt to retrieve the Pegasus Edit
In 2370, when Intelligence operatives within the Romulan High Command learned that the Romulans had become aware of the Pegasus' experiment, Pressman was chosen to head up the mission to retrieve the ship. He boarded the USS Enterprise-D, determined to find it before the Romulans. Reuniting with Riker, who by this point was first officer of the Enterprise-D, Pressman attempted to use his relationship with Riker for the mission, ordering him to take part without telling Picard and the Enterprise crew. Feeling unable to continue his role in the conspiracy, Riker revealed the true nature of Pressman's mission to Captain Picard, who promptly ordered Pressman placed under arrest. Although facing a court martial for his role in the illegal activities, Pressman informed Picard that he had "a lot of friends" at Starfleet Command. (ENT: "These Are the Voyages..."; TNG: "The Pegasus")