notifying atc of "security situation"
last night around midnight i heard one of the american freight outfits contacting hk radar with their position and flight level and then added something like "security situation normal." the hk atco was confused and asked him to say again, to which he replied "we were advised by the chinese to say security situation when we contact you." the atco ended up ignoring the remark and gave him his vector etc as usual.
does anyone know anything about this?