The Stealth Pack is one of the packs used in the game Tribes: Ascend. It is used by the Infiltrator class. The Stealth Pack functions exactly how one would expect it to; on activation, the pack begins to drain the player's energy, and in return makes him invisible. If a player uses his jetpack during this time, he will remain invisible, but waste even more energy. When the player is either out of energy or decides to deactivate the pack, they are instantly visible once more. If a player uses any of their weapons or abilities during invisibility, they will become partially visible for a set time, the length of which can be reduced through upgrades. The pack drains 5 energy every second, reduced to 4 when fully upgraded (20sec invisibility and 25 sec invisibility).