This is not the first time the Strogg were here on Earth. A scout ship
landed near what's today the remains of Rio de Janeiro, Brazil. The
Strogg drones gathered vital intelligence about the activities in the
zone, but they were persecuted and annihilated. The Strogg mother ship
sent a battalion to recover that intelligence, stored in a data brain
that the GDF discovered underground. The orders were: Retrieve the Data
Brain and transmit it through the communication hub at any cost!