Possible Clues:

• Administrative office
• Furtive air at reorganised administrative department
• Camouflaged cow catcher's first to leave office
• Triple Crown winner of 1973
• (Adminstrative) office
• Arcane air of initial trouble for the administrative department
• UNITED NATIONS BODY
• Administrative department with furtive cunning round Iowa
• Admin department
• Create a stir, reorganising office