One of the 30 companies that comprise the Dow Jones Industrial Average
are
Clue
Comprise
Definition
a unit of metric land measure
blank
Clue
Like the squares that comprise this puzzle's special letters
Definition
empty
catwalk
Clue
Fashion runway, or, in a way, what this puzzle's 10 perimeter answers comprise
Definition
a narrow walkway
contain
Clue
Comprise
Definition
to hold within
dag
Clue
Former UN leader Hammarskjöld [Note: The circled letters comprise a three-word instruction that, when applied to one square in the completed grid, reveals a group who might follow a code of silence]
