Related Clues:

• Guide (e.g. of ship through harbour)
• One-off programme, possibly, featuring religious set
• Just the Project for Everything But The Girl
• Trial of one involved in secret scheme
• Person ultimately overseeing good input to pilot
• Go variant played by Henry?
• One who gives a rallying call?
• Steer, test (scheme)
• Airliner crew member
• Rally director
• Assistant to driver, terrible man running over reptile in Florida
• Religious group's guide
• Passenger who gives a rallying call?
• Plane operator
• Henry, for example, blundering into a grave out East