Interceptor Signal: Flash navigation lights

Meaning: You have been intercepted

Interceptor Signal: Turn on landing lights

Meaning: Land here

Your signal: Flash navigation lights

Meaning: I will comply

Your signal: Turn on landing light

Meaning: I will land

Your signal: Flash landing light

Meaning: Airport inadequate

Your signal: Flash all lights regular

Meaning: Can not comply

Your signal: Flash all lights irregular

Meaning: Distress