On a survey of P2X-787, simultaneously being explored by SG-13, a probe sent to search for information in regards to the Ancients stumbled across the SG team and, after a brief firefight, was successfully disabled. Deeming the world to be safe, at least for the immediate future, Stargate Command allowed SG-13 to continue to study the ruins they had found. Unfortunately, unbeknownst to the SGC, the probe had dispatched a sub-space signal before it was destroyed, and a Goa'uld strike force appeared soon afterwards to engage the explorers, triggering an intense firefight between Jaffa troops and teams associated with the SGC including the flagship team, SG-1. (SG1: "Heroes, Part 1")