accountability
ambuscade
ambush
ambushment
auspices
blind
booby trap
bossing
bugging
care
charge
cloak-and-dagger work
counterespionage
counterintelligence
custodianship
custody
eagle eye
electronic surveillance
espial
espionage
eye
following
guard
guardedness
guardianship
inspection
intelligence
intelligence work
intendance
invigilation
jurisdiction
lookout
lurking hole
military intelligence
monitoring
observance
observation
oversight
peeled eye
proctoring
prudence
qui vive
reconnaissance
responsibility
scrutiny
secret police
secret service
shadowing
sharp eye
police investigation
police work
stakeout
surveillance of disease
vigil
watch
surveil
survey
access
assessment
backup
communication
coverage
defense
detection
enforcement
maintenance
monitor
patrol
radar
research
satellite
scan
supervision
transportation
Valence
valence