Possible Clues:

• No cause for rejoicing when standards are this low
• Standard position for a passing-out parade?
• Where, by the sound of it, the flag is for the whole morning
• Flag there for the morning, by the sound of it
• Where the flag is of late
• Where the flag may fly during the morning, by the sound of it (2, 4-4)
• Where to find 6 across during the morning, by the sound of it
• Where's the flag for the 17 across?