wherein receiving {HEAD ~ the security classification information comprises} receiving {TAIL ~ first aggregated security classification information} that identifies a first mapping between a first security class and a first set of computing devices and receiving second aggregated security classification information that identifies a second mapping between a second security class and a second set of computing devices, 
receiving
wherein receiving { HEAD ~ the security classification information comprises } receiving { TAIL ~ first aggregated security classification information } that identifies a first mapping between a first security class and a first set of computing devices and receiving second aggregated security classification information that identifies a second mapping between a second security class and a second set of computing devices ,
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH