Trivia: During a scene in the derelict building Teal'c and Ally are hiding in, you'll notice significant graffiti on the walls. In one shot, there is visible graffiti on the right-side wall, with the word "F*CK". Also, earlier in the episode just before SG-1 are initially attacked by the giant insects, you can see traffic driving by in the background, through the windows of the glass building.
Trivia: In this episode, Colleen Rennison plays "Ally", the young girl who helps Teal'c. Rennison would later go on to play Cassandra (the Hankan girl SG-1 brings back to Earth in "Singularity") in "Rite of Passage."
Answer: While the series was undeniably successful, filming it is a long process, taking many months of often long days. Anderson, after several years of doing this, wished to spend more time with his young daughter, who he felt he was neglecting, and requested that his role in the series be scaled back. Ultimately, he decided to leave the main cast altogether and only make occasional guest appearances.
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