Related Clues:

• Underwater beeper
• Shipwreck finder
• Speeder catcher
• Speeder's worry
• "M*A*S*H" role
• Parked highway patrolman's gun
• Aviation aid
• Navigation technology
• Underwater transmission
• ''M*A*S*H'' clerk
• Salvage-ship equipment
• Bats use it
• Palindromic 'M*A*S*H*' nickname
• Fish detector
• Dolphin's sense