If we lost this ambulance waiting for him, I don't know when we'd get another.
An ambulance was waiting to receive the man in question.
The ambulance was waiting for them out in the parking lot.
And an ambulance waited near the shore, just in case.
They promised that an ambulance would be waiting at the airport.
We carried her, barely alive, back to the beach, where an ambulance was waiting.
"Too bad I have no radio, boys, or we could call ahead and have an ambulance waiting."
We mustn't keep the ambulance waiting and I'm not certain how long the doctor will take it's almost eight o'clock.
This time we went down a ramp where another, or the same, pink ambulance waited at the bottom.
Only that they had rushed him to shore, where the ambulance and the reporters were waiting.