Related Clues:

• Grid officials
• Field marshals?
• Flag throwers, at times
• NFL arbiters
• Field workers
• They get paid to make calls
• Call makers
• Flag throwers
• Ring 5-Downs
• 'Zebras'
• Linesmen's co-workers
• Striped officials
• They sometimes count to 10
• Penalty callers
• Officials who assist referee from the side