So this was the mind control Buck had witnessed firsthand.

It's not about necessarily witnessing firsthand that makes the experience.

I also witnessed firsthand the land management techniques of the logging corporations.

He wrote that "I witnessed firsthand the effects of populist campaigning."

The expedition members witnessed firsthand the effects of climate change in Antarctica.

As a child, Serres witnessed firsthand the violence and devastation of war.

She had witnessed firsthand the reluctance among Macet's men to turn in their weapons.

The new president had witnessed firsthand the frustration and humiliation of his immediate predecessor.

He would have been more than human if he had been, after what he'd just witnessed firsthand.

I have witnessed firsthand the abuse and discrimination of the so-called Marielitos.