close operations

close-quarters combat (CQC) / close-quarters battle (CQB)

Joint Information Operations Center /Joint Intelligence Operations Center (JIOC)

special operations forces operations (SOFOPS)

surface-to-air missile operations center / SAM operations center (SAMOC)

air-ground operations operations section

at close quarters

close air support (CAS)

close air support mission

close approach

close column

close combat

close combat attack (CCA)

close combat optic (CCO)

close defensive fire

close engagement

close envelopment

close observation

close political-military communication

close support

close support aircraft

close supporting fire

close-in air defense weapon

close-in defensive fire

close-in stun gun

close-in weapons system

precision night close air support (CAS)

Secretary General’s Close Protection Unit

danger close

Danger Close method of engagement

Close Air Support Control Team (CAST)

close reconnaissance

close-support fire