What is BBT event?


In Akito the Exiled episode 2, there is a female scientist talking with a
person in a lab tank and she mentioned about "BBT event". It seems it was
about the four 11s being synced in battle. But still, what does it mean?




The scientist says "BRS", not "BBT" (this is around 54:12 into the episode).

Odds are that the "BR" stand for "Brain Raid" (which is a thing that is
mentioned earlier by the same person, around 46:37). [Japanese Wikipedia
claims](http://ja.wikipedia.org/wiki/%E4%BA%A1%E5%9B%BD%E3%81%AE%E3%82%A2%E3%82%AD%E3%83%88#.E4.B8.BB.E8.A6.81.E4.BA.BA.E7.89.A9)
that the "S" stands for "System", though I don't know where it gets that from.

[The official website](http://www.geass.jp/akito/kmf_alexander.html) describes
"Brain Raid mode" (ブレインレイド状態) as a feature of the Alexander (the mech that
Akito pilots):

> ブレインレイドの状態に突入すると、頭部のマスクが展開する。  
>  ブレインレイドとは、アレクサンダのパイロットの精神が拡張する機能。  
>  拡張された精神はType-02の各パイロットの精神を浸食、各機を子機として自在に操ることができる。
>
> When the Alexander enters Brain Raid mode, its face mask deploys. During a
> Brain Raid, the pilot's mind "extends", allowing it to subsume the minds of
> other Type-02 pilots, allowing their mechs to be controlled as extensions of
> the main unit.

