They contacted the station staff but the man had left the area and gone out through the ticket barrier.

I'll try giving the book "Reiko's Recommended" a quick skim read on the spot.

Quiet! Everybody stay where they are, there will now be a possessions check.

She took in the situation at a glance.

She described the scene in detail.

Her behavior was appropriate to the occasion.

Her coat was too casual for the occasion.

She is equal to the occasion.

They got away from the place.

He applied for the job but was turned down on the spot.

He made a speech highly appropriate to the occasion.

He stood rooted to the spot in amazement.

He failed to appear on the occasion.

He paid the money on the spot.

He was murdered on the spot.

His speech was suitable for the occasion.

His speech was not very becoming to the occasion.

He intervened and settled the matter peacefully for the time being.

I was on the spot when he had a heart attack.

When suddenly faced with a dangerous situation, hold your horses - make sure of the proper action, then act.