The Booster Tube is the long pipe running the length of the [/equipment/ghost-trap/pedal/ EDA] and into the [/equipment/proton-pack/part-names/attenuator/ Attenuator]. The [/equipment/proton-pack/part-names/booster-frame/ Booster Frame] is bolted on the Booster Tube. According to evidence found by pchrisbosh1, there are two types of weld present on the tube, a detail which differs from movie to movie. In the first movie, all the hero packs had a thick weld between the top of the tube and the Ion�Arm, probably to strengthen the Ion Arm installation on the fiberglass shell. In the second movie, a weld was added at the base of the tube, where it goes into the Attenuator. The semi-hero props had the booster tube and weld molded in, and they actually added the weld on the hero packs that they upgraded for the second movie.