"The guard assumed that my 23-year-old staff person was the member of Congress."

It was to his advantage if the guard assumed he was a powerless flunky.

Naturally, the guards would assume she'd joined them.

The guards assumed he was merely another official from the House, on government business.

The guards strapped him in and assumed their posts- one by the door, the other at the prisoner's side.

If he wasn't, the guard would assume he'd used the tin spoon to dig a hole through the stone floor and escape.

The guards assumed a position at the door.

For some reason, I cannot think why, the guard must have assumed you were from there.

The ranks closed, and the guards assumed firing stances.

The two guards had assumed professional stances on hearing my footsteps.