This from Dan McInerney:

?Monday afternoon, members of the 13th Battalion conducted a drill at the FedEx facility using TL63 and Squad 7A’s elevated master streams. Both apparatus were supplied by E12 (hidden in front of Squad 7A)

O'Hare Airport fire trucks

Dan McInerney photo

O'Hare Airport fire trucks

Dan McInerney photo

O'Hare Airport fire trucks

Dan McInerney photo

O'Hare Airport fire trucks

Dan McInerney photo

O'Hare Airport fire trucks

Dan McInerney photo

O'Hare Airport fire trucks

Dan McInerney photo