1. Electronic warfare undertaken under direct control of an operational commander to locate sources of radiated electromagnetic energy for the purpose of immediate threat recognition
   - ESM

Type of: electronic warfare, EW

• air base
• air bed
• air bladder
• air bubble
• air castle
• air cell
• air cleaner
• Air Combat Command
• air compressor
• air conditioner
• air conditioning
• Air Corps
• air cover
• air current
• air cushion
• air defence
• air defense
• air division
• air duct
• air embolism
• air filter
• air force academy
• Air Force Intelligence Surveillance and Reconnaissance
• Air Force ISR
• air force officer