I will be graduating with a BA in physics and BS in Electrical Engineering in May. I want an optics PhD. I attended an info session on Sandia National Labs at my university, and the recruiters made me think about a PhD program through a national lab. If someone has experience with the National Labs, I would appreciate some advice on applying to a national lab, and the pros and cons of National Lab careers. All my experience has been with academia and private sector; I have no understanding of these national labs.