On the occasion of Mitchell's 200th trip through the stargate, SG-1 was scheduled to travel to P2C-106. Their trip was delayed, apparently due to a stargate malfunction and the assignment to meet with Martin Lloyd, however, when the team did depart on the mission, they were accompanied by General O'Neill, General Landry, and Sergeant Harriman. Unbeknownst to Mitchell, SG teams 3 through 18 were also waiting on the other side with cake, balloons, streamers, the works.
Cross Reference: Cameron Mitchell
Episode Reference: 200