A note on "Friendly Fire": the phenomena of "friendly fire" (weapons damaging one's own teammates) has been circumvented in the 22nd century, by the use of nano-triggers and nano-weaponry. Currently the term "FriendlyFire" refers to this system. Shrapnel, bullets, and blast particles are split-second destabilized before striking any Frontiersmen, fragmenting harmlessly against their armor. In rare cases nano-gridlock has been known to interfere with this protection for the duration of a battle. Another strange gap in the FriendlyFire system: a fired weapon still injures the person who activated it. This is only a danger with grenades and mines … but is very important to note.