To answer the additional questions Ive been getting . . .
I will be leaving my job here at the Naval Research Lab (south east DC, south of Bolling AFB) around this time next year, and I must find and train my replacement.
There is quite a large amount of information I must pass down to my replacement, so ideally I would like to have the hiring finalized by this coming winter and have about two or three months to train before March of 2008. The idea of the summer internship is so we can try and coincide with the school year and have someone lined up beforehand.
Its a 'multi-hat' job, meaning you will do everything from embedded programming, circuit design, machining, computational analysis, etc. If a candidate has built decent complete robots on his/her own, that person would be a strong hire - even if the person is weak in a particular area (such as programming, for example).
Oh and I forgot to mention the benefits. The hours are very very flexible. There is optional biannual travel involved too - for example, I am going to Italy to present our research in April. Its a nice perk =)
DC is also a great city for young professionals.
As for the pay, its between industry and university pay. If you like to do research and write papers, but get paid for it at the same time, then this is the job for you!