unidentified source (u/i)

unidentified flying object (UFO)

unidentified (u/i)

unidentified covername

unidentified floating object

unidentified human remains

unidentified radar target

all-source analysis system

all-source intelligence

all-source production

heat-source target

human source

open source intelligence (OSINT)

open-source information

radioactive source

source data

source of information

water source

be backed up by open source analysis

confirmed credibility of the source of the material

credibility of the source of the material

web-enabled open-source intelligence

HUMINT source

influence source

inspection at source

surface source

density of a surface source

double source

double surface source

eliminate danger source

linear source

negative source

noise reduction at source