The newest Earth warship, "Apollo", arrives at Atlantis. Its commander, Abe Ellis (Michael Beach), informs the Expedition that recon missions have discovered the Asurans building ships on their homeworld, which the IOA believe will be used to attack Earth. As the ships are built from only conventional materials, "Apollo" has been assigned to destroy them in a preemptive strike, using the new "Horizon" weapons delivery system. "Apollo" successfully carries out the mission over the objections of Weir (Torri Higginson), who feels her authority being increasingly sidelined.