Following the departure of representatives from the International Oversight Advisory from the scientific research areas of the facility, Pullman and Myers returned to their laboratory to discover that their experiment had grown out of hand. R75 had multiplied to the extent that that every pocket of space in their containment unit was gone.
When R75 broke containment and threatened the base, Colonel Pearson ordered the self-destruct sequence. While SG-1 escaped to the surface with the I.O.A. representatives, it is likely that Pullman perished when the Gamme Site base was destroyed.
The Scourge - Pullman and Myers return to their laboratory to find their lab experiment out of control.