This episode marks a momentous occasion in that it marks the first shots ever fired in the series (even if none of them hit their mark) and brings two very iconic recurring ideas with it that carry on deep into the series.
The first joke that's born out of this episode is the undeniable fact that Church literally cannot aim for his life. Be it with a sniper rifle, pistol, rocket launcher, you name it, it actually takes a miracle for Church to hit his target, and each failed attempt is utterly hilarious.
The next notable event that's due to reoccur later on in the series is Tucker's relationship with teleporters. Although it apparently has the same effect on rocks, whenever Tucker goes through the teleporter there is a brief hiccup in time and his armor gets covered in "weird black stuff".
Looking at the episode as a whole, it brings great comedic value during the time when Church and Tucker berate Caboose for letting a Red get away with their flag, even though technically he was just following his orders. The instigation of the recurring joke of Church's missed shots are a great segue for Grif and Simmons to take notice of what's going on in the canyon beyond their base, and then subsequently leap into action by getting in the Warthog to help. Meanwhile, poor Private Donut has no idea what is going on, just trying to make his way back from the store and having to dodge shots along the way.
Favorite Dialogue from the Episode:
Simmons: I don't know what you're talking about. I didn't hear any shots.
Grif: I'm telling you, it was four shots. Like bam, bam, bam.
Simmons: Wait a second, that's only three bams.