Recently some 1/c (Senior) summer internships have included: 3 of the DOE National Labs, Microsoft, DHS and USCG units, FBI, NSA, Boeing, and a few others. They are usually 4-6 weeks long then the 1/c cadet will go afloat for the other 4-6 weeks of 1/c summer. The internship option opens early with some options requiring Top Secret clearance and can vary by academic major. This cadets will get a list of options to apply for. It is a bit of a trade off pursuing an internship as it may limit the other half of your summer. For example, it is difficult to get the required sea time to earn a 100-Ton license by graduation if you take an internship. Of course, you can always acquire the extra sea time after you graduate and get your 100-ton then. Some love the internships and for many location matters. For others, by the time they get in processed and up to speed, it is time to rotate out as they usually only last 5 weeks. Lots of options to explore.