In regards to the question of how Servalan was able to zap sample
targets after marking Travis, an idea came to mind. Perhaps it can be
set to "last marked, first killed" mode, allowing a person to select
only the last marked target (and might work its way baack to the others
if you keep it on longer). That might make more sense than
directionality, and also have allowed Rashel to threaten Servalan
without potentially killing everyone else.