I'm a senior and will be graduating this year with degrees in mechanical engineering and computational math. I kind of applied last minute, having heard of it before but not giving it much thought until a couple of weeks before the deadline. Anyway, I feel that overall I'm a very strong applicant, but might've botched up my application a bit. I have a 3.9 GPA, have had a couple of academic experiences abroad, and good research experience in the area I want to work in if I get the internship (CFD/porous media flows/transport). I'm positive my recommendations were stellar. I just think I came off as a bit unenthusiastic in the essays. I wrote them in the span of two days as I had a pretty packed winter break, and they were pretty short. I also remember the application not asking for a resume, but instead having to fill out some out questions about awards, STEM coursework and stuff that I feel weren't a good substitute for a resume at all. But all in all, the issue is mostly that my app was a bit unpolished. I think I did communicate pretty well why I want the internship and how it plays into my future career goals though... My question to those of you who have received the internship before or are familiar with it: how competitive is the selection process? From what I gather, it's mostly the researchers that go through a listing of the applications and choose from the students that interest them. I'm taking a gap year before applying to grad school. I have other research plans during part of that gap year, but nothing lined up for this summer yet, so I'm just wondering if I should start seriously considering some other options.