When he concentrated, the events of the past few hours began to come back to him.

The events of the last several hours were finally catching up with him.

The events of the past few hours were haunting him.

And how was he handling the events of the previous 24 hours?

But the events of the past few hours had rattled him.

And let his mind come to terms with the events of the last twenty-four hours.

The events of the last few hours had got me down to my second wind, so to speak.

The events of the past twenty-four hours had been too much for him.

His concerns were only for the events of the next few hours.

But it was the events of the past few hours that kept him alert.