@GerryCerryBery Some of Serena's soldiers wear pants as well. It could be that they simply don't need stingers to kill someone(after all, guns work just fine, as does cqc I'm sure), or that the stingers can rip through clothing just fine. Stingers are most useful as a surprise attack or in an environment where conventional weapons usually are not allowed, such as in a school setting or on a train.