Related Clues:

• At the front of the line
• Casting director's dismissal
• Closest
• Nearest in space or position
• Barber's invitation
• Vaccinator's call
• At the head of the line
• Ensuing
• Ready to travel
• Call to the head of the line
• On the plane
• Barber's call
• Next in line
• Waiting-room call
• Talk show host's phrase