Emerged from swimming:

Certeau’s tactical model describes individuals or groups which are fragmented in terms of space and maintain no specific site of operation (no headquarters), but who are capable of swiftly combining according to a current necessity.

With no ownership of dedicated resources, it is essentially makeshift in nature and cannot rely on a proper; instead, it depends on a gift economy, on time (it waits for resources it does not own or did not make to go idle), and on loopholes; it will infiltrate but will not try to take over.