Vibration when braking

I hope this is the right section for this... So when I am braking, my truck seems to have some sort of vibration, sometimes so bad that the steering wheel shakes, but not enough to make it so I can't drive. This is noticable when I am braking on a straight section of road, but the vibration increases in intensity when I am braking while turning. I talked to people at Les Schwab's and they said it could be that the rotors are warped. What are your thoughts on this? And how could I go about fixing this?

 

Your rotors are warped. You should have them machined or replaced by a qualified brake shop.