Related Clues:
- Fly under the ___
- Tool for scouting pitchers
- Sub's navigational aid
- Undersea acronym
- Airport installation
- Acronym on a submarine
- Walter O'Reilly, affectionately
- Fuzzbuster's find
- Weather forecaster's tool
- Dulles device
- Navigation tool
- It can trap a 24-Across
- Salvage ship equipment
- Sub seeker
- Undersea tracker