He reached behind his back to get something from his belt.

The suspect dropped into a crouch and reached behind his back for a gun.

You should work to reach your thumb up and behind your back.

He went prone on the flagstones, face down, and tried to reach behind his back.

She reached behind the other guard's back and slipped out his sidearm.

He reached behind his back and closed the hall door.

He reached behind his back and found the sugar on the tray without looking for it.

He reached once more behind his back and withdrew the weapon.

Get right to it, I thought, reaching behind my back for the cuffs.