Related Clues:

• Plane-tracking device
• Pitching coach's aid
• Speeder snagger
• ___ gun
• Leadfoot's nemesis
• Gun at a ball game
• Air-traffic aid
• "M*A*S*H" character with great hearing
• 'M*A*S*H*' palindrome
• Speed gauge
• Aircraft equipment
• Gun in a dugout
• Air-traffic detector
• Defense mechanism?
• Airplane tracker