[Tagging] pied headquarters (was: emergency=lifeguard)

[Tobias Wrede]

Speaking of the wiki. May any native speaker explain to me what 
"operated _pied_ headquarters" are? What does "pied" mean" Or am I 
missing an obvious typo here?

from the wiki: "The station is near to be guarded waters and serves the 
emergency services of the organization as operated pied headquarters and 
guard. " 
https://wiki.openstreetmap.org/wiki/Tag:emergency%3Dwater_rescue_station