If you're a woman, prepare to be offered less. I tried to negotiate a higher salary (by $5k) at the end of my internship and was told flat out, "No, this is all we're authorized to offer." Two male friends had been offered $10k more than I had--they warned me that they'd heard pay was unfair, and they wanted me to know what BAE was prepared to give them. That $10k was before they negotiated, too.